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.
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History
Wed, 15 Oct 2025 19:15:00 +0000
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ssvc
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Wed, 15 Oct 2025 17:30:00 +0000
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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. | |
Title | --disallow-code-generation-from-strings is not sufficient for isolating untrusted JavaScript in happy-dom | |
Weaknesses | CWE-1321 | |
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Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2025-10-15T18:16:44.558Z
Reserved: 2025-10-13T16:26:12.178Z
Link: CVE-2025-62410

Updated: 2025-10-15T18:16:01.640Z

Status : Received
Published: 2025-10-15T18:15:40.567
Modified: 2025-10-15T18:15:40.567
Link: CVE-2025-62410

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