CVE-2026-26956 | vm2 is an open source vm/sandbox for Node.js. In version 3.1… | CVSS 9.8 CRITICAL

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.

Metadata

CVE ID: CVE-2026-26956
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-02-16 22:20 UTC
Published: 2026-05-04 16:37 UTC
Last updated: 2026-05-05 13:10 UTC
Primary CWE: CWE-693
CWE-693: Protection Mechanism Failure
Vendor / Product: patriksimek / vm2
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
patriksimek	vm2	—	= 3.10.4

Weakness (CWE)

CWE	Source	Description
CWE-693	cna	CWE-693: Protection Mechanism Failure

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (2)

https://github.com/patriksimek/vm2/security/advisories/GHSA-ffh4-j6h5-pg66 https://github.com/patriksimek/vm2/security/advisories/GHSA-ffh4-j6h5-pg66
https://github.com/patriksimek/vm2/releases/tag/v3.10.5 https://github.com/patriksimek/vm2/releases/tag/v3.10.5