CVE-2026-92947 vm2 before 3.11.7 Memory Disclosure via Buffer Pool
Sandboxed code in vm2 can access host memory via shared Buffer pools, leading to sensitive data exposure and potential denial-of-service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-92947?
CVE-2026-92947 is a critical 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 before 3.11.7 exposes Node's shared Buffer pool to sandboxed code, allowing disclosure of host memory used by Buffer.from, Buffer.concat, and related allocations. Sandboxed code can read and write to host-realm buffers by acquiring ArrayBuffers from small allocations, leading to sensitive data exposure and potential denial-of-service.
Weakness: CWE-200
Which versions are affected by CVE-2026-92947?
2 open source packages ship an affected version, including vm2.
| Package | Affected | Fixed in |
|---|---|---|
vm2 npm | All versions | 3.11.7 |
vm2 npm | All versions | 3.11.7 |
How do I fix CVE-2026-92947?
Upgrade vm2 to 3.11.7 or later.
Is CVE-2026-92947 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-92947 exists.
Sources
Also known as CLEANSTART-2026-XK86217, ECHO-e5bb-1e90-121a, GHSA-fcqc-726x-5wfc, MINI-x46j-w389-mqmp, ROOT-APP-NPM-CVE-2026-92947.