CVE-2026-92944
criticalvm2 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 du…
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/patriksimek/vm2/commit/4635ddd85839461c8ad791990023a477efefe7bd disclosure@vulncheck.com
- https://github.com/patriksimek/vm2/commit/7b26e81087ec88c287d9a4812f969d412f32774e disclosure@vulncheck.com
- https://github.com/patriksimek/vm2/security/advisories/GHSA-27g9-p43v-cw3v disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/vm2-3.10.2-through-3.11.6-sandbox-escape-via-promise-... disclosure@vulncheck.com
- https://github.com/patriksimek/vm2/security/advisories/GHSA-27g9-p43v-cw3v 134c704f-9b21-4f2e-91b3-4a467353bcc0