CVE-2026-34226Happy DOM's fetch credentials include uses page-origin cookies instead of target-origin cookies

Descripción

Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. Versions prior to 20.8.9 may attach cookies from the current page origin (`window.location`) instead of the request target URL when `fetch(..., { credentials: "include" })` is used. This can leak cookies from origin A to destination B. Version 20.8.9 fixes the issue.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://github.com/capricorn86/happy-dom/security/advisories/GHSA-w4gp-fjgq-3q4g ExploitVendor Advisory
• https://github.com/capricorn86/happy-dom/pull/2117 Issue TrackingPatch
• https://github.com/capricorn86/happy-dom/commit/68324c21d7b98f53f7bb5a7b3e185bda7106e751 Patch
• https://github.com/capricorn86/happy-dom/blob/f8d8cad41e9722fab9eefb9dfb3cca696462e908/packages/happy-dom/src… Patch
• https://github.com/capricorn86/happy-dom/releases/tag/v20.8.9 ProductRelease Notes
• https://access.redhat.com/security/cve/CVE-2026-34226
• https://bugzilla.redhat.com/show_bug.cgi?id=2452519
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34226.json