happy-dom's `--disallow-code-generation-from-strings` is not sufficient for isolating untrusted JavaScript

Description

The mitigation proposed in GHSA-37j7-fg3j-429f for disabling eval/Function when executing untrusted code in happy-dom does not suffice, since it still allows prototype pollution payloads.

Recommendation

Update the happy-dom package to the latest compatible version. Followings are version details:

• Affected version(s): >= 19.0.0, < 20.0.2
• Patched version(s): 20.0.2

References

• GHSA-qpm2-6cq5-7pq5
• CVE-2025-62410
• CWE-1321
• CAPEC-310
• OWASP 2021-A6

Related Issues

• Undici's fetch with integrity option is too lax when algorithm is specified but hash value is in incorrect - CVE-2024-30261
• happy-dom allows for server side code to be executed by a <script> tag - CVE-2024-51757
• Saltcorn Server allows logged-in users to delete arbitrary files because of a path traversal vulnerability - CVE-2024-47818
• Happy DOM: VM Context Escape can lead to Remote Code Execution - CVE-2025-61927

Tags:

npm

happy-dom