GHSA-27r3-jxmh-p828

Source

https://github.com/advisories/GHSA-27r3-jxmh-p828

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-27r3-jxmh-p828/GHSA-27r3-jxmh-p828.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-27r3-jxmh-p828

Aliases

CVE-2026-111181

Published

2026-10-23T20:53:11Z

Modified

2026-10-23T21:00:06Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

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

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.

Database specific

{
    "cwe_ids":  [
        "CWE-248"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-10-23T20:53:11Z",
    "nvd_published_at":  "2026-10-22T15:17:04Z",
    "severity":  "HIGH"
}

References

Affected packages

npm / body-parser

Package

Name: body-parser; View open source insights on deps.dev
Purl: pkg:npm/body-parser

Affected ranges

Type: SEMVER
Events: Introduced

2.0.0

Fixed

2.4.0

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-27r3-jxmh-p828/GHSA-27r3-jxmh-p828.json"

npm / body-parser

Package

Name: body-parser; View open source insights on deps.dev
Purl: pkg:npm/body-parser

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

1.20.9

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-27r3-jxmh-p828/GHSA-27r3-jxmh-p828.json"