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 @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 @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 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,...

SandboxJS 安全漏洞

SandboxJS is a security assessment tool developed by nyariv. Versions of SandboxJS prior to 0.8.31 contained security vulnerabilities. These vulnerabilities stemmed from a sandbox escape exploit that allowed sandbox code to contaminate built-in prototypes on the host through array literal...

CVE-2026-25587

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, as Map is in SAFEPROTOYPES, it's 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...

CVE-2026-25520

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, The return values of functions aren't wrapped. Object.values/Object.entries can be used to get an Array containing the host's Function constructor, by using Array.prototype.at you can obtain the hosts Function constructor, which can b...

CVE-2026-25586

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, a sandbox escape is possible by shadowing hasOwnProperty on a sandbox object, which disables prototype whitelist enforcement in the property-access path. This permits direct access to proto and other blocked prototype properties,...

CVE-2026-25520

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, The return values of functions aren't wrapped. Object.values/Object.entries can be used to get an Array containing the host's Function constructor, by using Array.prototype.at you can obtain the hosts Function constructor, which can b...

CVE-2026-25587

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, as Map is in SAFEPROTOYPES, it's 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...

CVE-2026-25586

SandboxJS (JavaScript sandboxing library) is affected by a sandbox-escape vulnerability prior to version 0.8.29. The flaw allows shadowing hasOwnProperty on a sandbox object, disabling prototype whitelist enforcement in the property-access path. This enables direct access to proto and other block...

CVE-2026-25586 SandboxJS has a Sandbox Escape via Prototype Whitelist Bypass and Host Prototype Pollution

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, a sandbox escape is possible by shadowing hasOwnProperty on a sandbox object, which disables prototype whitelist enforcement in the property-access path. This permits direct access to proto and other blocked prototype properties,...

CVE-2026-25586

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, a sandbox escape is possible by shadowing hasOwnProperty on a sandbox object, which disables prototype whitelist enforcement in the property-access path. This permits direct access to proto and other blocked prototype properties,...

CVE-2026-25586 SandboxJS has a Sandbox Escape via Prototype Whitelist Bypass and Host Prototype Pollution

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, a sandbox escape is possible by shadowing hasOwnProperty on a sandbox object, which disables prototype whitelist enforcement in the property-access path. This permits direct access to proto and other blocked prototype properties,...

CVE-2026-25520

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, The return values of functions aren't wrapped. Object.values/Object.entries can be used to get an Array containing the host's Function constructor, by using Array.prototype.at you can obtain the hosts Function constructor, which can b...

EUVD-2026-5591

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, The return values of functions aren't wrapped. Object.values/Object.entries can be used to get an Array containing the host's Function constructor, by using Array.prototype.at you can obtain the hosts Function constructor, which can b...

CVE-2026-25520 SandboxJS has a Sandbox Escape

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, The return values of functions aren't wrapped. Object.values/Object.entries can be used to get an Array containing the host's Function constructor, by using Array.prototype.at you can obtain the hosts Function constructor, which can b...

CVE-2026-25520 SandboxJS has a Sandbox Escape

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, The return values of functions aren't wrapped. Object.values/Object.entries can be used to get an Array containing the host's Function constructor, by using Array.prototype.at you can obtain the hosts Function constructor, which can b...

CVE-2026-25520

CVE-2026-25520 affects SandboxJS (JavaScript sandboxing library) prior to version 0.8.29. The underlying issue is that function return values aren’t wrapped, allowing attackers to use Object.values/Object.entries and Array.prototype.at to retrieve the host’s Function constructor. With access to t...