ghsa-wqch-xfxh-vrr4
Vulnerability from github
Published
2025-11-25 14:20
Modified
2025-11-25 18:09
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
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.

Show details on source website

To clipboard 

{
  "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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