CVE-2026-34226

High CVSS: 7.5

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.

Vendor

Capricorn86

Product

Happy Dom

CWE

CWE-201

Yayın Tarihi

2026-03-27 22:16:23

Güncelleme

2026-04-01 13:26:49

Source Identifier

security-advisories@github.com

KEV Date Added

Kategoriler

CWE-201 Happy Dom HIGH Capricorn86 2026

Referanslar

https://github.com/capricorn86/happy-dom/blob/f8d8cad41e9722fab9eefb9dfb3cca696462e908/packages/happy-dom/src/fetch/utilities/FetchRequestHeaderUtility.ts https://github.com/capricorn86/happy-dom/commit/68324c21d7b98f53f7bb5a7b3e185bda7106e751 https://github.com/capricorn86/happy-dom/pull/2117 https://github.com/capricorn86/happy-dom/releases/tag/v20.8.9 https://github.com/capricorn86/happy-dom/security/advisories/GHSA-w4gp-fjgq-3q4g