CVE-2026-92944 vm2 3.10.2 through 3.11.6 Sandbox Escape via Promise Protector
Attackers can escape the vm2 sandbox to execute arbitrary code on the host system by exploiting a Promise protector bypass in Node.js.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-92944?
CVE-2026-92944 is a critical code injection vulnerability in patriksimek vm2, published on 17 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-693
Which versions are affected by CVE-2026-92944?
2 open source packages ship an affected version, including vm2.
| Package | Affected | Fixed in |
|---|---|---|
vm2 npm | From 3.10.2 | 3.11.7 |
vm2 npm | From 3.10.2 | 3.11.7 |
How do I fix CVE-2026-92944?
Upgrade vm2 to 3.11.7 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-92944 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-92944 exists.
Sources
Also known as CLEANSTART-2026-WY20719, ECHO-89d0-4de4-3380, GHSA-27g9-p43v-cw3v, MINI-6vxp-r3ww-2h52, ROOT-APP-NPM-CVE-2026-92944.