EUVD-2026-5589

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, there is a sandbox escape vulnerability due to a mismatch between the key on which the validation is performed and the key used for accessing properties. Even though the key used in property accesses is annotated as string, this is...

CVE-2026-25641 SandboxJS has a sandbox escape via TOCTOU bug on keys in property accesses

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, there is a sandbox escape vulnerability due to a mismatch between the key on which the validation is performed and the key used for accessing properties. Even though the key used in property accesses is annotated as string, this is...

CVE-2026-25641 SandboxJS has a sandbox escape via TOCTOU bug on keys in property accesses

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, there is a sandbox escape vulnerability due to a mismatch between the key on which the validation is performed and the key used for accessing properties. Even though the key used in property accesses is annotated as string, this is...

SandboxJS 安全漏洞

SandboxJS is a security assessment tool developed by nyariv’s individual developer. Versions of SandboxJS prior to 0.8.29 contained security vulnerabilities; these vulnerabilities stemmed from unboxed function return values, which could allow arbitrary code to be executed outside of the sandbox...

SandboxJS 安全漏洞

SandboxJS is a security assessment tool developed by nyariv. Versions of SandboxJS prior to 0.8.29 contained a security vulnerability that could lead to sandbox escape by overriding Map.prototype.has...

SandboxJS 安全漏洞

SandboxJS is a security assessment tool developed by nyariv. Versions of SandboxJS prior to 0.8.29 contained a security vulnerability. This vulnerability stemmed from the execution of validation keys that did not match the keys used to access properties, which could lead to sandbox escape...

SandboxJS 安全漏洞

SandboxJS is a security assessment tool developed by nyariv’s individual developer. Versions of SandboxJS prior to 0.8.29 contained a security vulnerability. This vulnerability stemmed from the use of hasOwnProperty to mask objects in the sandbox, allowing sandbox escape and disabling the prototy...

Time-of-check Time-of-use (TOCTOU) Race Condition

Overview @nyariv/sandboxjs is a Javascript sandboxing library. Affected versions of this package are vulnerable to Time-of-check Time-of-use TOCTOU Race Condition in addOps and other methods in executor.ts, which do not enforce the type of property keys. An attacker can execute arbitrary code on...

GHSA-7X3H-RM86-3342 @nyariv/sandboxjs vulnerable to sandbox escape via TOCTOU bug on keys in property accesses

Summary A sandbox escape vulnerabilities due to a mismatch between the key on which the validation is performed and the key used for accessing properties. Details Even though the key used in property accesses b in the code below is annotated as string, this is never enforced:...

Arbitrary Code Injection

Overview @nyariv/sandboxjs is a Javascript sandboxing library. Affected versions of this package are vulnerable to Arbitrary Code Injection by overriding the Map.prototype.has method. An attacker can execute arbitrary code on the underlying operating system because Map is included in SAFEPROTOYPE...

GHSA-66H4-QJ4X-38XP @nyariv/sandboxjs has a Sandbox Escape vulnerability

Summary As Map is in SAFEPROTOYPES, it's prototype can be obtained via Map.prototype. By overwriting Map.prototype.has the sandbox can be escaped. Details This is effectively equivalent to CVE-2026-25142, but without lookupGetter let was used during testing, it turns out the let implementation is...

@nyariv/sandboxjs has a Sandbox Escape vulnerability

Summary As Map is in SAFEPROTOYPES, it's prototype can be obtained via Map.prototype. By overwriting Map.prototype.has the sandbox can be escaped. Details This is effectively equivalent to CVE-2026-25142, but without lookupGetter let was used during testing, it turns out the let implementation is...

Prototype Pollution

Overview @nyariv/sandboxjs is a Javascript sandboxing library. Affected versions of this package are vulnerable to Prototype Pollution via prototypeAccess on a shadowed sandbox object's hasOwnProperty. An attacker can execute arbitrary code on the underlying system by bypassing the prototype...

Prototype Pollution

Overview @nyariv/sandboxjs is a Javascript sandboxing library. Affected versions of this package are vulnerable to Prototype Pollution due to unfiltered access to the Function constructor, via Array.prototype.at. An attacker can execute arbitrary code on the underlying system by chaining calls to...

@nyariv/sandboxjs has a Sandbox Escape issue

Summary 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 be used to execute arbitrary code outside of the sandbox...

PT-2026-6653

Name of the Vulnerable Software and Affected Versions SandboxJS versions prior to 0.8.29 Description SandboxJS is a JavaScript sandboxing library. Prior to version 0.8.29, a flaw exists where the prototype of the Map object, present in SAFE PROTOYPES, can be accessed via Map.prototype. By...

PT-2026-6652

SandboxJS and Affected Versions SandboxJS versions prior to 0.8.29 Description SandboxJS, a JavaScript sandboxing library, is susceptible to a sandbox escape issue. This occurs because of the ability to shadow the hasOwnProperty method on a sandbox object, which disables prototype whitelist...

PT-2026-6658

Name of the Vulnerable Software and Affected Versions SandboxJS versions prior to 0.8.29 Description SandboxJS, a JavaScript sandboxing library, has a sandbox escape issue. This is due to a mismatch between the key used for validation and the key used for property access. The key, intended to be ...

PT-2026-6648

Name of the Vulnerable Software and Affected Versions SandboxJS versions prior to 0.8.29 Description SandboxJS is a JavaScript sandboxing library affected by an issue where the return values of functions are not properly wrapped. This allows attackers to use Object.values or Object.entries to...

CVE-2026-25142

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.27, SanboxJS does not properly restrict lookupGetter which can be used to obtain prototypes, which can be used for escaping the sandbox / remote code execution. This vulnerability is fixed in 0.8.27...