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CVE-2026-26956

vm2: WASM Sandbox Escape (Node 25 only)

Published: May 4, 2026Updated: May 8, 2026 Sources: CVE List NVD BDUCWE-693
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
0.7%
Top 50.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-693

Affected Products

vm2patriksimek
Library
OSS Libraries / npm
vm2vm2 project
Library
OSS Libraries / npm
vm2Node.js FoundationOSS Libraries
patriksimekoss-projectOSS Libraries
vm2 projectoss-projectOSS Librariesaka vm2
node.js foundationoss-projectUSOSS Librariesaka nodejs foundation, node foundation

Exploitability

Official Patch Available

References

https://github.com/patriksimek/vm2/security/advisories/GHSA-ffh4-j6h5-pg66
github.com
https://github.com/patriksimek/vm2/releases/tag/v3.10.5
github.com
https://socradar.io/blog/cve-2026-26956-vm2-sandbox-escape-rce-node-js-25/
socradar.io

Timeline

Published
May 4, 2026
Last Updated
May 8, 2026

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