VULNERABILITY INTELLIGENCE

CVE-2026-26954

CVSS score10 CRITICAL
EPSS probability0.57%
CISA KEVNot currently listed
Published2026-03-13
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

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.

Weakness classification

  • security-advisories@github.com: CWE-94

Primary references