CVE-2026-92933 vm2 before 3.11.8 Information Disclosure via util.getCallSites
Sandboxed code can access host call stacks via util.getCallSites, leaking file paths and internal details.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-92933?
CVE-2026-92933 is a medium-severity 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 is a sandbox for running untrusted Node.js code. In versions <= 3.11.7, NodeVM exposes the host `util` module to the sandbox as an unfiltered shallow copy (`Object.assign({}, util)` in `defaultBuiltinLoaderUtil`), and the deprecated `sys` builtin (an alias of host `util`) is exposed through the generic builtin loader. On Node.js >= 22.9 this hands sandboxed code `util.getCallSites()`, a programmatic stack-introspection API that returns the host process's full call stack, including absolute file paths, function names, and line numbers for vm2 bridge internals and the embedding application's entrypoint. This bypasses the host-frame redaction introduced for GHSA-v27g-jcqj-v8rw, which only applies to the `Error.prepareStackTrace` formatting channel. The issue is fixed in vm2 3.11.8.
Weakness: CWE-200
Which versions are affected by CVE-2026-92933?
2 open source packages ship an affected version, including vm2.
| Package | Affected | Fixed in |
|---|---|---|
vm2 npm | All versions | 3.11.8 |
vm2 npm | All versions | 3.11.8 |
How do I fix CVE-2026-92933?
Upgrade vm2 to 3.11.8 or later.
Is CVE-2026-92933 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-92933 exists.
Sources
Also known as ECHO-52f4-e7b3-c993, GHSA-r273-hxvj-fxhp, MINI-vqrq-2hjj-jwwq.