CVE-2026-92944

critical · 9.3

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.

9.3

CVSS

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EPSS (exploit prob.)

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EPSS percentile

2026-09-17

Published

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-693

References

https://github.com/patriksimek/vm2/commit/4635ddd85839461c8ad791990023a477efefe7bd
https://github.com/patriksimek/vm2/commit/7b26e81087ec88c287d9a4812f969d412f32774e
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-via-promise-protector

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-92944