Description (CNA)
Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. In versions 15.10.0 through 20.8.7, 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. The compiler directly interpolates unsanitized content into generated code as an executable expression, and the quote filter does not strip backticks, allowing template literal-based payloads to bypass sanitization. Version 20.8.8 fixes the issue.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| capricorn86 / happy-dom | affected >= 15.10.0, < 20.8.8 |
CWE
CWE-94
References
- https://github.com/capricorn86/happy-dom/security/advisories/GHSA-6q6h-j7hj-3r64
- https://github.com/capricorn86/happy-dom/commit/5437fdf8f13adb9590f9f52616d9f69c3ee8db3c
- https://github.com/capricorn86/happy-dom/releases/tag/v20.8.8
ADP enrichment
No English description supplied.
A flaw was found in Happy DOM, a JavaScript implementation of a web browser. This vulnerability allows a remote attacker to achieve Remote Code Execution (RCE) by injecting arbitrary JavaScript expressions. The `ECMAScriptModuleCompiler` component fails to properly sanitize content within `export { }` declarations in ES module scripts, leading to the direct execution of malicious code.