Vulnerability Description
vm2 versions 3.10.2 through 3.11.6 contain a sandbox escape vulnerability on Node.js 26 where Promise.prototype.finally() bypasses vm2's wrapper protections due to a stale PromiseThenLookupChain protector in V8 14.6. Attackers can exploit this by creating an async function that returns a Promise with an attacker-controlled constructor Symbol.species, allowing them to reach the host Function constructor and process object for arbitrary code execution.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://github.com/patriksimek/vm2/commit/4635ddd85839461c8ad791990023a477efefe7
- https://github.com/patriksimek/vm2/commit/7b26e81087ec88c287d9a4812f969d412f3277
- https://github.com/patriksimek/vm2/security/advisories/GHSA-27g9-p43v-cw3v
- https://www.vulncheck.com/advisories/vm2-3.10.2-through-3.11.6-sandbox-escape-vi
- https://github.com/patriksimek/vm2/security/advisories/GHSA-27g9-p43v-cw3v
FAQ
What is CVE-2026-92944?
CVE-2026-92944 is a vulnerability with a CVSS score of 9.8 (CRITICAL). vm2 versions 3.10.2 through 3.11.6 contain a sandbox escape vulnerability on Node.js 26 where Promise.prototype.finally() bypasses vm2's wrapper protections due to a stale PromiseThenLookupChain prote...
How severe is CVE-2026-92944?
CVE-2026-92944 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-2026-92944?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.