CVE-2026-25142

CRITICAL

10.0

Description

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.

CVE Details

CVSS v3.1 Score10.0

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/2/2026

Last Modified2/18/2026

Sourcenvd

Honeypot Sightings0

Affected Products

nyariv:sandboxjs

Weaknesses (CWE)

CWE-94CWE-1321

References

https://github.com/nyariv/SandboxJS/blob/f212a38fb5a6d4bc2bc2e2466c0c011ce8d41072/src/executor.ts#L368-L398(security-advisories@github.com)

https://github.com/nyariv/SandboxJS/commit/75c8009db32e6829b0ad92ca13bf458178442bd3(security-advisories@github.com)

https://github.com/nyariv/SandboxJS/security/advisories/GHSA-9p4w-fq8m-2hp7(security-advisories@github.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.