Critical severityOSV Advisory· Published Oct 15, 2025· Updated Apr 15, 2026
CVE-2025-62410
CVE-2025-62410
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
happy-domnpm | >= 19.0.0, < 20.0.2 | 20.0.2 |
Affected products
2- Range: v0.0.1, v0.1.0, v0.10.0, …
Patches
Vulnerability mechanics
References
4News mentions
0No linked articles in our index yet.