GHSA-VX9W-5CX4-9796

Vulnerability from github – Published: 2026-01-16 20:58 – Updated: 2026-06-05 14:44
VLAI
Summary
Crawl4AI Has Local File Inclusion in Docker API via file:// URLs
Details

A local file inclusion vulnerability exists in the Crawl4AI Docker API. The /execute_js, /screenshot, /pdf, and /html endpoints accept file:// URLs, allowing attackers to read arbitrary files from the server filesystem.

Attack Vector:

POST /execute_js
{
    "url": "file:///etc/passwd",
    "scripts": ["document.body.innerText"]
}

Impact

An unauthenticated attacker can: - Read sensitive files (/etc/passwd, /etc/shadow, application configs) - Access environment variables via /proc/self/environ - Discover internal application structure - Potentially read credentials and API keys

Workarounds

  1. Disable the Docker API
  2. Add authentication to the API
  3. Use network-level filtering
Severity
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
9.2 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "Crawl4AI"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.8.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-26217"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-01-16T20:58:51Z",
    "nvd_published_at": "2026-02-12T16:16:17Z",
    "severity": "CRITICAL"
  },
  "details": "A local file inclusion vulnerability exists in the Crawl4AI Docker API. The /execute_js, /screenshot, /pdf, and /html endpoints accept file:// URLs, allowing attackers to read arbitrary files from the server filesystem.\n\nAttack Vector:\n```json\nPOST /execute_js\n{\n    \"url\": \"file:///etc/passwd\",\n    \"scripts\": [\"document.body.innerText\"]\n}\n```\nImpact\n\nAn unauthenticated attacker can:\n- Read sensitive files (/etc/passwd, /etc/shadow, application configs)\n- Access environment variables via /proc/self/environ\n- Discover internal application structure\n- Potentially read credentials and API keys\n\nWorkarounds\n\n1. Disable the Docker API\n2. Add authentication to the API\n3. Use network-level filtering",
  "id": "GHSA-vx9w-5cx4-9796",
  "modified": "2026-06-05T14:44:09Z",
  "published": "2026-01-16T20:58:51Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/unclecode/crawl4ai/security/advisories/GHSA-vx9w-5cx4-9796"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26217"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/crawl4ai/PYSEC-2026-34.yaml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/unclecode/crawl4ai"
    },
    {
      "type": "WEB",
      "url": "https://github.com/unclecode/crawl4ai/blob/main/docs/blog/release-v0.8.0.md"
    },
    {
      "type": "WEB",
      "url": "https://github.com/unclecode/crawl4ai/blob/release/v0.8.0/docs/blog/release-v0.8.0.md"
    },
    {
      "type": "WEB",
      "url": "https://github.com/unclecode/crawl4ai/blob/release/v0.8.0/docs/migration/v0.8.0-upgrade-guide.md"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/crawl4ai-docker-api-local-file-inclusion-via-file-url-handling"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Crawl4AI Has Local File Inclusion in Docker API via file:// URLs"
}



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