CVE-2025-7339 — on-headers vulnerable to http response header manipulation
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 modi…
Published: 2025-07-17 · CVSS: 3.4 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7