CVE-2026-92939 vm2 3.11.3 through 3.11.6 Native Code Execution via crypto.setEngine
Attackers can escape the vm2 sandbox and execute arbitrary native code by abusing the exposed crypto module's setEngine function.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-92939?
CVE-2026-92939 is a critical code injection vulnerability in patriksimek vm2, published on 17 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
vm2 3.11.3 through 3.11.6 exposes the host Node.js crypto module to a NodeVM sandbox when the crypto builtin is allowed. The module is presented via a recursive read-only proxy, but its callable exports still execute with host-process authority. Sandboxed JavaScript can therefore call crypto.setEngine() with a filesystem path to an attacker-supplied native library (for example, one bundled in an untrusted plugin package already written to disk); OpenSSL asks the operating-system dynamic loader to load the file, and the library's constructor executes native code in the host process before engine-symbol validation rejects it. Exploitation requires only the crypto builtin and does not require fs, process, module, child_process, worker_threads, vm, or inspector access, resulting in a sandbox escape and arbitrary native code execution. Fixed in 3.11.7.
Weakness: CWE-114
Which versions are affected by CVE-2026-92939?
2 open source packages ship an affected version, including vm2.
| Package | Affected | Fixed in |
|---|---|---|
vm2 npm | From 3.11.3 | 3.11.7 |
vm2 npm | From 3.11.3 | 3.11.7 |
How do I fix CVE-2026-92939?
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-2026-92939 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-92939 exists.
Sources
Also known as CLEANSTART-2026-AL98227, ECHO-30f3-2738-f894, GHSA-46pr-c5wc-xffx, MINI-pc6c-wm4v-9h9v, ROOT-APP-NPM-CVE-2026-92939.