Description

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, a sandbox escape is possible by shadowing hasOwnProperty on a sandbox object, which disables prototype whitelist enforcement in the property-access path. This permits direct access to __proto__ and other blocked prototype properties, enabling host Object.prototype pollution and persistent cross-sandbox impact. This vulnerability is fixed in 0.8.29.

INFO

Published Date :

2026-02-06T19:54:38.446Z

Last Modified :

2026-02-06T20:17:19.095Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-25586 vulnerability.

Vendors Products
Nyariv
  • Sandboxjs
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-25586.

URL Resource
https://github.com/nyariv/SandboxJS/commit/67cb186c41c78c51464f70405504e8ef0a6e43c3 cve-icon cve-icon
https://github.com/nyariv/SandboxJS/security/advisories/GHSA-jjpw-65fv-8g48 cve-icon cve-icon cve-icon
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