7.5
High
CVE-2026-34226 Happy DOM is a JavaScript implementation of a web browser without its graphical user interface
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 products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| happy-dom 20.8 | earliest → < 20.8.9 | 20.8.9 |
| Red Hat Ansible Automation Platform 2 | Versions not published | |
| Red Hat OpenShift Container Platform 4 | Versions not published |
References
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com
Timeline
- Published
- Last modified
Other CVEs of happy-dom
The 9 CVEs of happy-dom →
CVE-2026-118661
Happy DOM is a JavaScript implementation of a web browser without its graphical user interface
6.5
Medium
CVE-2026-118660
Happy DOM is a JavaScript implementation of a web browser without its graphical user interface
8.6
High
CVE-2026-118659
Happy DOM is a JavaScript implementation of a web browser without its graphical user interface
7.5
High
CVE-2026-115895
Happy DOM is a JavaScript implementation of a web browser without its graphical user interface
8.8
High