CVE-2025-7339

LowCVSS 3.4/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 3.4/10CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

Weakness enumeration

CWE-241

Affected software

No affected versions have been published.

Timeline

Published: Jul 17, 2025
Last modified: Jun 17, 2026
NVD status: Deferred

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