CVE-2026-47208 vm2: Sandbox Breakout Using Promise Species
Attackers can escape the VM2 sandbox to execute arbitrary commands on the host system, requiring an upgrade to the patched version.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-47208?
CVE-2026-47208 is a critical code injection vulnerability in patriksimek vm2, published on 12 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, VM2 suffers from a sandbox breakout vulnerability. This allows attackers to write code which can escape from the VM2 sandbox and execute arbitrary commands on the host system. This issue has been patched in version 3.11.4.
Weakness: CWE-913
Which versions are affected by CVE-2026-47208?
2 open source packages ship an affected version, including vm2.
| Package | Affected | Fixed in |
|---|---|---|
vm2 npm | All versions | 3.11.4 |
vm2 npm | All versions | 3.11.4 |
How do I fix CVE-2026-47208?
Upgrade vm2 to 3.11.4 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-47208 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-47208 exists.
Sources
Also known as ECHO-a216-e8c6-1c76, GHSA-76w7-j9cq-rx2j, MINI-6xwj-x972-652p, ROOT-APP-NPM-CVE-2026-47208.