CVE-2026-26954

Published March 13th, 2026

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CVSS v3

CRITICAL

CVSS v2

N/A

Affected

PROJECT

Description

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.34, it is possible to obtain arrays containing Function, which allows escaping the sandbox. Given an array containing Function, and Object.fromEntries, it is possible to construct {[p]: Function} where p is any constructible property. This vulnerability is fixed in 0.8.34.

nyariv/SandboxJS

Safe eval runtime

GitHub

219