Description
A code injection vulnerability in ECMAScriptModuleCompiler allows an attacker to achieve Remote Code Execution (RCE) by injecting arbitrary JavaScript expressions inside export { } declarations in ES module scripts processed by happy-dom.
Recommendation
Update the happy-dom package to the latest compatible version. Followings are version details:
- Affected version(s): >= 15.10.0, <= 20.8.7
- Patched version(s): 20.8.8
References
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Start a free scanRelated Issues
- happy-dom allows for server side code to be executed by a <script> tag - CVE-2024-51757
- Happy DOM's fetch credentials include uses page-origin cookies instead of target-origin cookies - CVE-2026-34226
- happy-dom's `--disallow-code-generation-from-strings` is not sufficient for isolating untrusted JavaScript - CVE-2025-62410
- Happy DOM: VM Context Escape can lead to Remote Code Execution - CVE-2025-61927
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See something that needs correcting? Let us knowUpdated March 30, 2026