CVE-2025-62410— --disallow-code-generation-from-strings is not sufficient for isolating untrusted JavaScript in happy-dom
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I. Basic Information for CVE-2025-62410
Vulnerability Information
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Vulnerability Title
--disallow-code-generation-from-strings is not sufficient for isolating untrusted JavaScript in happy-dom
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1321
Source: NVD (National Vulnerability Database)
Vulnerability Title
happy-dom 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
happy-dom是David Ortner个人开发者的一种没有图形用户界面的 web 浏览器的 JavaScript 实现。 happy-dom 20.0.2之前版本存在安全漏洞，该漏洞源于隔离不足，可能导致原型污染攻击和控制流劫持。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| capricorn86 | happy-dom | < 20.0.2 | - |
II. Public POCs for CVE-2025-62410
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | None | https://github.com/SubZeroHackerz/CVE-2025-62410 | POC Details |
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IV. Related Vulnerabilities
Same weakness: CWE-1321
- CVE-2026-42264
Axios: Prototype pollution read-side gadgets in HTTP adapter - CVE-2026-42232
n8n: XML Node Prototype Pollution to RCE - CVE-2026-42231
n8n: Prototype Pollution in XML Webhook Body Parser Leads to - CVE-2026-42077
Evolver: Prototype Pollution via `Object.assign()` in mailbo - CVE-2026-42033
Axios: Prototype Pollution Gadgets - Response Tampering, Dat
V. Comments for CVE-2025-62410
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