CVE-2025-34146 Information

Aug 01, 2025 cve

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.

Reference

https://gist.github.com/Hagrid29/9df27829a491080f923c4f6b8518d7e3 https://github.com/nyariv/SandboxJS/issues/31 https://www.npmjs.com/package/@nyariv/sandboxjs https://www.vulncheck.com/advisories/nyariv-sandboxjs-prototype-pollution-sandbox-escape-dos

CNNVD-202507-3917 (Published: 2025-07-31)

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