CRITICALCVE-2026-25520Published Modified CNA GitHub_M
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 be used to execute arbitrary code outside of the sandbox. This vulnerability is fixed in 0.8.29.
Metrics
- CVSS v3.1
- 10.0
- Severity
- CRITICAL
- Fixed in
- —
- Affected Products
- 1
Affected packages
- nyariv / SandboxJS< 0.8.29
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H