body-parser vulnerable to Denial of Service via trailing bytes after a compressed request body
### 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.
beschreibt (1)
Zugehörige CVEs.
| ID | Schweregrad | ausnutzbar | ||
|---|---|---|---|---|
| CVE-2026-111181US | — | — | ||
body-parser is body parsing middleware for Node.js and Express. In versions before 1.20.9 and in versions from 2.0.0 before 2.4.0, a single request can crash any application using… | ||||
Referenzen
Externe Belege — Patches, Meldungen, Analysen.
- https://cna.openjsf.org/security-advisories.htmlWEB
- https://github.com/expressjs/body-parserPACKAGE
- https://github.com/expressjs/body-parser/commit/1260c3845f54502a05a87594f09a334786bb34d7WEB
- https://github.com/expressjs/body-parser/commit/f7075eae3a84c3473ab4bf0a777da28db208e916WEB
- https://github.com/expressjs/body-parser/releases/tag/1.20.9WEB
- https://github.com/expressjs/body-parser/releases/tag/v2.4.0WEB
- https://github.com/expressjs/body-parser/security/advisories/GHSA-27r3-jxmh-p828WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-111181ADVISORY
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