CVE-2026-25587

Publication date

2026-02-06 19:51:56

Family

GitHub_M

State

PUBLISHED

Description

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, as Map is in SAFE_PROTOYPES, its prototype can be obtained via Map.prototype. By overwriting Map.prototype.has the sandbox can be escaped. This vulnerability is fixed in 0.8.29.