CVE-2025-34146
CVE-2025-34146 · nyariv sandboxjs 0.8.23 Prototype Pollution Sandbox Escape DoS
This page contains facts from public vulnerability sources. Check the original advisory before updating.
A prototype pollution vulnerability exists in @nyariv/sandboxjs versions <= 0.8.23, allowing attackers to inject arbitrary properties into Object.prototype via crafted JavaScript code. This can result in a denial-of-service (DoS) condition or, under certain conditions, escape the sandboxed environment intended to restrict code execution. The vulnerability stems from insufficient prototype access checks in the sandbox’s executor logic, particularly in the handling of JavaScript function objects returned.
CVSS 7.0 · High · EPSS 0.2% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
sandboxjs
- Versions
- ≥ 0, ≤ 0.8.23: Affected (semver)
No fix published
@nyariv/sandboxjs npm
- Affected ranges
- SEMVER: < 0.8.24
Update to 0.8.24