CVE-2026-34208 SandboxJS: Sandbox integrity escape

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.36, SandboxJS blocks direct assignment to global objects for example Math.random = ..., but this protection can be bypassed through an exposed callable constructor path: this.constructor.calltarget, attackerObject. Because this.constructo...

CVE-2026-34208

CVE-2026-34208 (SandboxJS) affects SandboxJS versions prior to 0.8.36. The vulnerability arises because an exposed constructor path (this.constructor.call(target, attackerObject)) can bypass the global-write protection and cause host global objects to be mutated by attacker-controlled payloads. T...

GHSA-2GG9-6P7W-6CPJ SandboxJS: Sandbox integrity escape

Summary SandboxJS blocks direct assignment to global objects for example Math.random = ..., but this protection can be bypassed through an exposed callable constructor path: this.constructor.calltarget, attackerObject. Because this.constructor resolves to the internal SandboxGlobal function and...

PT-2026-30272

Name of the Vulnerable Software and Affected Versions SandboxJS versions prior to 0.8.35 Description SandboxJS has a flaw where direct assignment to global objects is blocked, but this protection can be bypassed through a callable constructor path using this.constructor.calltarget, attackerObject...