Unknown · @Nyariv/Sandboxjs · CVE-2025-34146
**Name of the Vulnerable Software and Affected Versions**
@nyariv/sandboxjs versions through 0.8.23
**Description**
A prototype pollution issue exists in @nyariv/sandboxjs, allowing attackers to inject arbitrary properties into `Object.prototype` via crafted JavaScript code. This can lead to a denial-of-service (DoS) condition or, potentially, escape the sandboxed environment. The root cause is insufficient prototype access checks within the sandbox’s executor logic, specifically when handling JavaScript function objects returned.
**Recommendations**
Update @nyariv/sandboxjs to a version later than 0.8.23.