Critical 9.8Published May 4, 2026

CVE-2026-26956vm2: WASM Sandbox Escape (Node 25 only)

Updated under an hour ago (Oct 28, 2026, 2:30 AM ET)

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It affects patriksimek vm2 and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for patriksimek vm2

Exploited in the last 30 days

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: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-693, CWE-653
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Modified
Record last updated: Jul 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

patriksimek vm2 patriksimek:vm2 (from the name)	= 3.10.4	CNA record
Red Hat Red Hat Developer Hub redhat:rhdh	1	CISA ADP
Red Hat Self-service automation portal 2 redhat:ansible_portal	2	CISA ADP
vm2_project vm2 vm2_project:vm2	before 3.10.5	NVD

References

References

https://github.com/patriksimek/vm2/security/advisories/GHSA-ffh4-j6h5-pg66	x-refsource-confirm, exploit, vendor-advisory
https://github.com/patriksimek/vm2/releases/tag/v3.10.5	x-refsource-misc, release-notes
https://access.redhat.com/security/cve/CVE-2026-26956
https://bugzilla.redhat.com/show_bug.cgi?id=2466548
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26956.json

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.