CVE-2026-26954 — SandboxJS has a Sandbox Escape
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 …
Published: 2026-03-13 · CVSS: 10.0 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7