Vulnerability Description
In versions before 20.0.2, it was found that --disallow-code-generation-from-strings is not sufficient for isolating untrusted JavaScript in happy-dom. The untrusted script and the rest of the application still run in the same Isolate/process, so attackers can deploy prototype pollution payloads to hijack important references like "process" in the example below, or to hijack control flow via flipping checks of undefined property. This vulnerability is due to an incomplete fix for CVE-2025-61927. The vulnerability is fixed in 20.0.2.
Related Weaknesses (CWE)
References
- https://github.com/capricorn86/happy-dom/commit/f4bd4ebe3fe5abd2be2bcea1c07043c8
- https://github.com/capricorn86/happy-dom/security/advisories/GHSA-qpm2-6cq5-7pq5
FAQ
What is CVE-2025-62410?
CVE-2025-62410 is a documented vulnerability. In versions before 20.0.2, it was found that --disallow-code-generation-from-strings is not sufficient for isolating untrusted JavaScript in happy-dom. The untrusted script and the rest of the applica...
How severe is CVE-2025-62410?
CVSS scoring is not yet available for CVE-2025-62410. Check NVD for updates.
Is there a patch for CVE-2025-62410?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.