{
  "canonical_id": "undici--CVE-2022-35949",
  "system_id": "undici",
  "display_name": "Undici",
  "category": "frameworks",
  "advisory_mode": "core",
  "title": "`undici.request` vulnerable to SSRF using absolute URL on `pathname`",
  "summary": "### Impact\n\n`undici` is vulnerable to SSRF (Server-side Request Forgery) when an application takes in **user input** into the `path/pathname` option of `undici.request`.\n\nIf a user specifies a URL such as `http://127.0.0.1` or `//127.0.0.1`\n\n```js\nconst undici = require(\"undici\")\nundici.request({origin: \"http://example.com\", pathname: \"//127.0.0.1\"})\n```\n\nInstead of processing the request as `http://example.org//127.0.0.1` (or `http://example.org/http://127.0.0.1` when `http://127.0.0.1 is used`), it actually processes the request as `http://127.0.0.1/` and sends it to `http://127.0.0.1`.\n\nIf a developer passes in user input into `path` parameter of `undici.request`, it can result in an _SSRF_ as they will assume that the hostname cannot change, when in actual fact it can change because the specified path parameter is combined with the base URL.\n\n### Patches\n\nThis issue was fixed in `undici@5.8.1`.\n\n### Workarounds\n\nThe best workaround is to validate user input before passing it to the `undici.request` call.\n\n## For more information\nIf you have any questions or comments about this advisory:\n\n- Open an issue in [undici repository](https://github.com/nodejs/undici/issues)\n- To make a report, follow the [SECURITY](https://github.com/nodejs/node/blob/HEAD/SECURITY.md) document\n",
  "published_at": "2022-08-18T18:59:46Z",
  "updated_at": "2023-11-08T04:09:53.898548Z",
  "severity": "medium",
  "cvss_score": 3.1,
  "exploit_status": "unknown",
  "source_confidence": "official",
  "official_source_url": "https://github.com/nodejs/undici/security/advisories/GHSA-8qr4-xgw6-wmr3",
  "secondary_source_urls": [
    "https://github.com/nodejs/undici/commit/124f7ebf705366b2e1844dff721928d270f87895",
    "https://nvd.nist.gov/vuln/detail/CVE-2022-35949",
    "https://github.com/nodejs/undici",
    "https://github.com/nodejs/undici/releases/tag/v5.8.2"
  ],
  "aliases": [
    "CVE-2022-35949",
    "GHSA-8qr4-xgw6-wmr3"
  ],
  "cve_ids": [
    "CVE-2022-35949"
  ],
  "ghsa_ids": [
    "GHSA-8qr4-xgw6-wmr3"
  ],
  "osv_ids": [
    "GHSA-8qr4-xgw6-wmr3"
  ],
  "affected_versions": [
    "introduced=0, fixed<5.8.2"
  ],
  "fixed_versions": [
    "5.8.2"
  ],
  "package_name": "undici",
  "render_markdown": true,
  "case_path": "07-framework-security/frameworks/undici/cases/undici-cve-2022-35949.md",
  "secure_code_topics": [
    "ssrf-url-validation",
    "proxy-trust-boundary",
    "dependency-upgrade-policy"
  ],
  "status": "generated",
  "triage_reasons": [],
  "verification_status": "triage-manual",
  "verification_mode": "synthetic",
  "last_verified_at": null,
  "last_run_id": null,
  "evidence_bundle": null,
  "historical_status": null,
  "latest_status": null,
  "browser_evidence": {
    "required": false,
    "present": false,
    "refs": []
  },
  "repro_profile_id": "undici-ssrf",
  "artifact_mode": "synthetic",
  "blocked_reason": null,
  "metadata": {
    "source_names": [
      "OSV Undici",
      "NVD Undici"
    ],
    "source_kinds": [
      "osv-batch",
      "nvd-search"
    ],
    "candidate_count": 2
  }
}