CVE-2025-7339 Information

Jul 18, 2025 cve

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.

Reference

https://cna.openjsf.org/security-advisories.html https://github.com/expressjs/morgan/issues/315 https://github.com/jshttp/on-headers/commit/c6e384908c9c6127d18831d16ab0bd96e1231867 https://github.com/jshttp/on-headers/issues/15 https://github.com/jshttp/on-headers/security/advisories/GHSA-76c9-3jph-rj3q

CNNVD-202507-2319 (Published: 2025-07-17)

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