CVE-2025-7339 | BDVDB-2026-286541 Detail
jshttpon-headers
Description#
on-headers is a node.js middleware for listening to when a response writes headers. A bug in on-headers versions `<1.1.0` may result in response headers being inadvertently modified when an array is passed to `response.writeHead()`. Users should upgrade to version 1.1.0 to receive a patch. Uses are strongly encouraged to upgrade to `1.1.0`, but this issue can be worked around by passing an object to `response.writeHead()` rather than an array.
Impact#
Per CVSS v3.1: confidentiality impact low, integrity impact low, availability impact none. Attack vector: local.
Weaknesses#
References#
- https://github.com/jshttp/on-headers/security/advisories/GHSA-76c9-3jph-rj3q
- https://github.com/jshttp/on-headers/commit/c6e384908c9c6127d18831d16ab0bd96e1231867
- https://cna.openjsf.org/security-advisories.html
- https://github.com/expressjs/morgan/issues/315
- https://github.com/jshttp/on-headers/issues/15
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.