What’s Vulnerable › Vulnerabilities

CVE-2024-51757: Fixes security vulnerability that allowed for server side code to be executed by a <script> tag

• Severity: critical (CVSS 9.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-11-06 · updated 2026-06-17
• Weakness: CWE-79

Description

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 15.10.1 — fixed in 15.10.1

How to fix

Upgrade to a fixed version: capricorn86 Happy-Dom 15.10.1. Check the vendor advisory for mitigations.

References

• 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

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