Vulnerability Details CVE-2026-26954
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 14.5%
CVSS Severity
CVSS v3 Score 10.0