Vulnerability details

CVE-2026-44009

patriksimek vm2

vm2: Sandbox Breakout Through Null Proto Exception

CVSS 3.1

9.8Critical

Official description

vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.2, VM2 suffers from a sandbox breakout vulnerability. This allows attackers to write code which can escape from the VM2 sandbox and execute arbitrary commands on the host system. This vulnerability is fixed in 3.11.2.

CVSS scores

Score	Version	Source	Vector
9.8Critical	3.1	CVEProject cvelistV5 (CNA) (GitHub_M)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
9.8Critical	3.1	CVEProject cvelistV5 (CNA) (redhat-SADP)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
patriksimek	vm2	< 3.11.2	CVEProject cvelistV5 (CNA)

References and advisories

https://github.com/patriksimek/vm2/commit/c33c2bb19a822847f4e01d8d87b28dd5b2c86b3e x_refsource_MISC
https://github.com/patriksimek/vm2/releases/tag/v3.11.2 x_refsource_MISC
https://github.com/patriksimek/vm2/security/advisories/GHSA-9vg3-4rfj-wgcm x_refsource_CONFIRM
https://access.redhat.com/security/cve/CVE-2026-44009 x_refsource_MISC
https://bugzilla.redhat.com/show_bug.cgi?id=2477185 x_refsource_MISC
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44009.json x_refsource_MISC
https://access.redhat.com/errata/RHSA-2026:50850 x_refsource_MISC

Kolun on Telegram @kolunsec Exploited CVEs, key news and a daily digest Alerts for this product's next CVEsFollow the product to get new vulnerabilities on Telegram.

Details

Published: 2026-05-13
Last updated: 2026-11-04
State: Published
Assigner (CNA): GitHub_M

Exploit prediction (EPSS)

1.01%

Probability of exploitation in 30 days

63.4%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: Proof of concept
Technical impact: Total

Weaknesses (CWE)

CWE-668
Exposure of Resource to Wrong Sphere
CWE-653
Improper Isolation or Compartmentalization