CVE-2025-34146

N/A

Description

A prototype pollution vulnerability exists in @nyariv/sandboxjs versions <= 0.8.23, allowing attackers to inject arbitrary properties into Object.prototype via crafted JavaScript code. This can result in a denial-of-service (DoS) condition or, under certain conditions, escape the sandboxed environment intended to restrict code execution. The vulnerability stems from insufficient prototype access checks in the sandbox’s executor logic, particularly in the handling of JavaScript function objects returned.

CVE Details

CVSS v3.1 ScoreN/A

Published7/31/2025

Last Modified7/31/2025

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-1321

References

https://gist.github.com/Hagrid29/9df27829a491080f923c4f6b8518d7e3(disclosure@vulncheck.com)

https://github.com/nyariv/SandboxJS/issues/31(disclosure@vulncheck.com)

https://www.npmjs.com/package/@nyariv/sandboxjs(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/nyariv-sandboxjs-prototype-pollution-sandbox-escape-dos(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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