Vulnerability Description
vm2 is an open source vm/sandbox for Node.js. In vm2 prior to version 3.10.2, `Promise.prototype.then` `Promise.prototype.catch` callback sanitization can be bypassed. This allows attackers to escape the sandbox and run arbitrary code. In lib/setup-sandbox.js, the callback function of `localPromise.prototype.then` is sanitized, but `globalPromise.prototype.then` is not sanitized. The return value of async functions is `globalPromise` object. Version 3.10.2 fixes the issue.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Vm2 Project | Vm2 | < 3.10.2 |
Related Weaknesses (CWE)
References
- https://github.com/patriksimek/vm2/commit/4b009c2d4b1131c01810c1205e641d614c322aPatch
- https://github.com/patriksimek/vm2/releases/tag/v3.10.2ProductRelease Notes
- https://github.com/patriksimek/vm2/security/advisories/GHSA-99p7-6v5w-7xg8ExploitVendor Advisory
FAQ
What is CVE-2026-22709?
CVE-2026-22709 is a vulnerability with a CVSS score of 9.8 (CRITICAL). vm2 is an open source vm/sandbox for Node.js. In vm2 prior to version 3.10.2, `Promise.prototype.then` `Promise.prototype.catch` callback sanitization can be bypassed. This allows attackers to escape ...
How severe is CVE-2026-22709?
CVE-2026-22709 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-22709?
Check the references section above for vendor advisories and patch information. Affected products include: Vm2 Project Vm2.