CVE-2024-51757: CAPRICORN86 Happy-Dom

Critical severity, CVSS 9.3. EPSS: 0.8% chance of exploitation in the next 30 days.

happy-dom is a JavaScript implementation of a web browser without its graphical user interface. Versions of happy-dom prior to 15.10.2 may execute code on the host via a script tag. This would execute code in the user context of happy-dom. Users are advised to upgrade to version 15.10.2. There are no known workarounds for this vulnerability.

Affected products

• CAPRICORN86 Happy-Dom: before 15.10.2 (fixed in 15.10.2); before 15.10.1 (fixed in 15.10.1)

Published 2024-11-06. Last modified 2026-06-17.