[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
body-parser	2.3.0 → 2.4.0

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body-parser vulnerable to Denial of Service via trailing bytes after a compressed request body

CVE-2026-111181 / GHSA-27r3-jxmh-p828

More information

Details

Impact

A single request can crash any application using body-parser with default options. When a request carries a Content-Encoding (for example gzip), body-parser pipes it into a decompression stream and, after reading the body, leaves that stream piped with no error listener. A payload of one valid compressed frame followed by trailing bytes decodes and the application responds normally, but the trailing bytes then reach the already-finished decoder, which emits an error that is re-thrown as an uncaught exception and terminates the process. No authentication or matching route is required, since parsing runs before routing.

Patches

Fixed in body-parser 2.4.0 and 1.20.9. Upgrade to one of these versions.

Workarounds

Pass inflate: false to the body-parser middleware if the application does not need to accept compressed request bodies. This rejects encoded requests before any decompression stream is created.

Severity

• CVSS Score: 7.5 / 10 (High)
• Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

• https://github.com/expressjs/body-parser/security/advisories/GHSA-27r3-jxmh-p828
• https://nvd.nist.gov/vuln/detail/CVE-2026-111181
• https://github.com/expressjs/body-parser/commit/1260c3845f54502a05a87594f09a334786bb34d7
• https://github.com/expressjs/body-parser/commit/f7075eae3a84c3473ab4bf0a777da28db208e916
• https://cna.openjsf.org/security-advisories.html
• https://github.com/expressjs/body-parser/releases/tag/1.20.9
• https://github.com/expressjs/body-parser/releases/tag/v2.4.0
• https://github.com/advisories/GHSA-27r3-jxmh-p828

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

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Release Notes

expressjs/body-parser (body-parser)

v2.4.0

Compare Source

=====

• Security fix for GHSA-27r3-jxmh-p828 (CVE-2026-111181)
• feat: add zstd content-encoding support (#​586)
  • Requires Node.js ^22.15.0 or >=23.8.0; older versions keep returning 415 for zstd encoded bodies
• fix: avoid mutating the parser options and the request object while reading the body (#​742, #​750)
• perf(json): avoid first-char regex for direct JSON bodies (#​744)
• deps:
  • content-type@^2.1.0
  • iconv-lite^0.7.3
  • qs@^6.16.1

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