GHSA-WQCH-XFXH-VRR4

Vulnerability from github – Published: 2025-11-25 14:20 – Updated: 2025-11-25 18:09
VLAI?
Summary
body-parser is vulnerable to denial of service when url encoding is used
Details

Impact

body-parser 2.2.0 is vulnerable to denial of service due to inefficient handling of URL-encoded bodies with very large numbers of parameters. An attacker can send payloads containing thousands of parameters within the default 100KB request size limit, causing elevated CPU and memory usage. This can lead to service slowdown or partial outages under sustained malicious traffic.

Patches

This issue is addressed in version 2.2.1.

Severity ?
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
5.5 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/E:P
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "body-parser"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.2.0"
            },
            {
              "fixed": "2.2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-13466"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-11-25T14:20:21Z",
    "nvd_published_at": "2025-11-24T19:15:46Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\n\nbody-parser 2.2.0 is vulnerable to denial of service due to inefficient handling of URL-encoded bodies with very large numbers of parameters. An attacker can send payloads containing thousands of parameters within the default 100KB request size limit, causing elevated CPU and memory usage. This can lead to service slowdown or partial outages under sustained malicious traffic.\n\n### Patches\n\nThis issue is addressed in version 2.2.1.",
  "id": "GHSA-wqch-xfxh-vrr4",
  "modified": "2025-11-25T18:09:52Z",
  "published": "2025-11-25T14:20:21Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/expressjs/body-parser/security/advisories/GHSA-wqch-xfxh-vrr4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-13466"
    },
    {
      "type": "WEB",
      "url": "https://github.com/expressjs/body-parser/commit/b204886a6744b0b6d297cd0e849d75de836f3b63"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/expressjs/body-parser"
    },
    {
      "type": "WEB",
      "url": "https://github.com/expressjs/body-parser/releases/tag/v2.2.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "body-parser is vulnerable to denial of service when url encoding is used"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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