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CVE-2026-34226

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

CVSS 7.5 HIGHEPSS 0.4%CWE-201CWE-359
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Produtos afetados
capricorn86 · happy-dom

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Referências
https://github.com/capricorn86/happy-dom/blob/f8d8cad41e9722fab9eefb9dfb3cca696462e908/packages/happy-dom/src/fetch/utilities/FetchRequestHeaderUtility.tshttps://github.com/capricorn86/happy-dom/commit/68324c21d7b98f53f7bb5a7b3e185bda7106e751https://github.com/capricorn86/happy-dom/pull/2117https://github.com/capricorn86/happy-dom/releases/tag/v20.8.9https://github.com/capricorn86/happy-dom/security/advisories/GHSA-w4gp-fjgq-3q4g