CVE-2025-62410

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/capricorn86/happy-dom/commit/f4bd4ebe3fe5abd2be2bcea1c07043c8b0b70eea
https://github.com/capricorn86/happy-dom/security/advisories/GHSA-qpm2-6cq5-7pq5

Configurations

No configuration.

History

15 Oct 2025, 18:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-10-15 18:15

Updated : 2025-10-16 15:28

NVD link : CVE-2025-62410

Mitre link : CVE-2025-62410

CVE.ORG link : CVE-2025-62410

JSON object : View

Products Affected

No product.

CWE

CWE-1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

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