Code injection in Happy DOM - CVE-2025-61927
Published: December 16, 2025
Vulnerability identifier: #VU120001
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-61927
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation. A remote attacker can trick the victim into visiting a specially crafted website and and execute arbitrary code on the target system in the context of the Node.js VM Context.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Happy DOM
Red Hat OpenShift Dev Spaces
Red Hat OpenShift Dev Spaces
How to mitigate CVE-2025-61927
Install updates from vendor's website.
Happy DOM - update to 20.0.0
Red Hat OpenShift Dev Spaces - update to 3.25.0
Red Hat OpenShift Dev Spaces - update to 3.25.0