CVE-2026-26956

Name: CVE-2026-26956
Creator: NVD / NIST
Published: 2026-05-04T17:16:22.553+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.74%

Last modified Jun 17, 2026

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 0.74% 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

0.74%

50.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-693

Affected Software

Vendor	Product	Versions
Vm2 Project	Vm2	< 3.10.5

References

https://github.com/patriksimek/vm2/releases/tag/v3.10.5Release Notes
https://github.com/patriksimek/vm2/security/advisories/GHSA-ffh4-j6h5-pg66Exploit, Vendor Advisory
https://github.com/patriksimek/vm2/security/advisories/GHSA-ffh4-j6h5-pg66Exploit, Vendor Advisory

Timeline

Published: May 4, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-26956?

How severe is CVE-2026-26956?

CVE-2026-26956 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.74% 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.

Are you affected by CVE-2026-26956?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST