CVE-2026-25142
CVE-2026-25142 · SandboxJS Prototype Pollution -> Sandbox Escape -> RCE
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 10.0 · Critical · EPSS 1.2% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
sandboxjs
- Versions
- < 0.8.27: Affected
No fix published
@nyariv/sandboxjs npm
- Affected ranges
- SEMVER: < 0.8.27
Update to 0.8.27
Original sources
- https://github.com/nyariv/SandboxJS/security/advisories/GHSA-9p4w-fq8m-2hp7
- https://github.com/nyariv/SandboxJS/commit/75c8009db32e6829b0ad92ca13bf458178442bd3
- https://github.com/nyariv/SandboxJS/blob/f212a38fb5a6d4bc2bc2e2466c0c011ce8d41072/src/executor.ts#L368-L398
- https://nvd.nist.gov/vuln/detail/CVE-2026-25142