CVEvulnerability

CVE-2026-34226

7.5 HIGH Published 2026-03-27 Modified 2026-10-26 Official page ↗
Status
Modified
Published
2026-03-27
Last modified
2026-10-26
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weaknesses
CWE-201, CWE-359

Description

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.

Affected configurations

• capricorn86 happy dom (< 20.8.9)

Related

Weakness · CWE (2)

  • CWE-201 Insertion of Sensitive Information Into Sent Data weakness
  • CWE-359 Exposure of Private Personal Information to an Unauthorized Actor weakness

References