CVE-2026-25881

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.31, a sandbox escape vulnerability allows sandboxed code to mutate host built-in prototypes by laundering the isGlobal protection flag through array literal intermediaries. When a global prototype reference e.g., Map.prototype,...

CVE-2026-25881 @nyariv/sandboxjs has host prototype pollution from sandbox via array intermediary (sandbox escape)

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.31, a sandbox escape vulnerability allows sandboxed code to mutate host built-in prototypes by laundering the isGlobal protection flag through array literal intermediaries. When a global prototype reference e.g., Map.prototype,...

CVE-2026-25881

SandboxJS prior to version 0.8.31 contains a sandbox-escape vulnerability where sandboxed code can mutate host prototypes by laundering the isGlobal protection flag through array literals. Specifically, a global prototype reference (for example Map.prototype or Set.prototype) stored in an array a...

CVE-2026-25881

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.31, a sandbox escape vulnerability allows sandboxed code to mutate host built-in prototypes by laundering the isGlobal protection flag through array literal intermediaries. When a global prototype reference e.g., Map.prototype,...

PT-2026-7165

Name of the Vulnerable Software and Affected Versions SandboxJS versions prior to 0.8.31 Description SandboxJS is a JavaScript sandboxing library with a flaw that allows sandboxed code to modify host built-in prototypes. This is achieved by removing a protection flag through array literal...