CVE DATABASE / CVE-2026-26956
CVE-2026-26956
CVSS 9.8 · CRITICAL
Summary
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 breakdown
| Base score | 9.8 (CRITICAL) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Attack vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity | HIGH |
| Availability | HIGH |
Weakness type (CWE)
Affected products
Vm2_project 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
Data: NIST NVD. NVD last modified 2026-05-08. Always verify against the vendor advisory before acting.