CVE-2026-26956

vm2: WASM Sandbox Escape (Node 25 only)

vm2 is an open source vm/sandbox for Node.js. In version 3.10.4, vm2 is vulnerable to full sandbox escape with arbitrary code execution. Attacker code inside VM.run() obtains host process object and runs host commands with zero host cooperation. This issue has been patched in version 3.10.5.

Affected

patriksimek · vm2

CVSS v3.1 CNA

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.92% chance of exploitation in the next 30 days, 60th percentile

Published

2026-05-04

Updated

2026-07-15

Proof-of-concept exploits (1)

• advisories/GHSA-ffh4-j6h5-pg66

Security advisories

• patriksimek/vm2/security/advisories/GHSA-ffh4-j6h5-pg66
• patriksimek/vm2/releases/tag/v3.10.5

References

• CVE Record
• NVD entry