#VU120000 Universal cross-site scripting in Happy DOM - CVE-2024-51757
Published: December 16, 2025
Vulnerability identifier: #VU120000
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:U/U:Green
CVE-ID: CVE-2024-51757
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Happy DOM
Happy DOM
Software vendor:
capricorn86
capricorn86
Description
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
Remediation
Install updates from vendor's website.
External links
- https://github.com/capricorn86/happy-dom/commit/5ee0b1676d4ce20cc2a70d1c9c8d6f1e3f57efac
- https://github.com/capricorn86/happy-dom/commit/d23834c232f1cf5519c9418b073f1dcec6b2f0fd
- https://github.com/capricorn86/happy-dom/issues/1585
- https://github.com/capricorn86/happy-dom/pull/1586
- https://github.com/capricorn86/happy-dom/releases/tag/v15.10.2
- https://github.com/capricorn86/happy-dom/security/advisories/GHSA-96g7-g7g9-jxw8