CVE-2026-26956

vm2: WASM Sandbox Escape (Node 25 only)

CVSS 9.8 CRITICALEPSS 0.7%CWE-693

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.

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

Affected products

patriksimek · vm2

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References

https://github.com/patriksimek/vm2/releases/tag/v3.10.5 https://github.com/patriksimek/vm2/security/advisories/GHSA-ffh4-j6h5-pg66