CVE-2026-26954

critical · 10

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.

CVSS

0.5%

EPSS (exploit prob.)

45th

EPSS percentile

2026-03-13

Published

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

Weaknesses

CWE-94

Affected products

Vendor	Product	Affected versions
nyariv	sandboxjs	< 0.8.34

Check a specific version with /api/v1/cve/match.

References

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-26954