expressjs/body-parser · Security
body-parser is vulnerable to denial of service when url encoding is used
- GHSA ID
- GHSA-wqch-xfxh-vrr4
- CVE ID
- CVE-2025-13466
- Severity
- medium
- Published
- Updated
- CVSS
- 5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CVSS v3
- 5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CVSS v4
- 5.5 · 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
Description
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.
CWEs
- CWE-400 · Uncontrolled Resource Consumption
References
- https://github.com/expressjs/body-parser/security/advisories/GHSA-wqch-xfxh-vrr4 ↗
- https://nvd.nist.gov/vuln/detail/CVE-2025-13466 ↗
- https://github.com/expressjs/body-parser/commit/b204886a6744b0b6d297cd0e849d75de836f3b63 ↗
- https://github.com/expressjs/body-parser/releases/tag/v2.2.1 ↗
- https://github.com/advisories/GHSA-wqch-xfxh-vrr4 ↗