PatchTheCVEhappy dom vulnerabilities and fixes
Recent CVEs affecting happy dom, with upgrade or downgrade steps. 1 tracked.
Also searched as: happydom.
happy dom has 1 tracked vulnerability, 0 critical. A fixed release or vendor patch exists for 1. Most recent: 2026-03-27. Highest priority: CVE-2026-33943 (score 48/100).
- CVE-2026-33943 HIGH 8.8 UPGRADE Happy DOM is a JavaScript implementation of a web browser without its graphical user interface
FAQ
How do I fix happy dom vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is happy dom being exploited right now?
None of the tracked happy dom CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which happy dom CVE should I patch first?
CVE-2026-33943 currently ranks highest (48/100): Happy DOM is a JavaScript implementation of a web browser without its graphical user interface.