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CVE-2026-26956

CRITICALCVSS 9.8/10EPSS 0.92%

Last modified

CVE-2026-26956 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 0.92% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
9.8/10

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

EPSS Probability
0.92%

56.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Vm2 ProjectVm2< 3.10.5

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2026-26956?
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.
How severe is CVE-2026-26956?
CVE-2026-26956 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.92% probability of exploitation in the next 30 days.
How do I fix CVE-2026-26956?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST