CVE-2026-26954

CRITICAL

10.0

Description

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.34, it is possible to obtain arrays containing Function, which allows escaping the sandbox. Given an array containing Function, and Object.fromEntries, it is possible to construct {[p]: Function} where p is any constructible property. This vulnerability is fixed in 0.8.34.

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

Published3/13/2026

Last Modified3/17/2026

Sourcenvd

Honeypot Sightings0

Affected Products

nyariv:sandboxjs

Weaknesses (CWE)

CWE-94

References

https://github.com/nyariv/SandboxJS/security/advisories/GHSA-6r9f-759j-hjgv(security-advisories@github.com)

https://github.com/nyariv/SandboxJS/security/advisories/GHSA-6r9f-759j-hjgv(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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