CVE-2026-44009
vm2: Sandbox Breakout Through Null Proto Exception
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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.
Public exploit
A reference of the record is tagged as an exploit or proof of concept: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: a proof of concept is public.
- https://github.com/patriksimek/vm2/security/advisories/GHSA-9vg3-4rfj-wgcm (opens in a new tab)x_refsource_CONFIRMexploit
Timeline
ID reserved
By GitHub_M
- 9 days later
· 9 days later
Published
- 6 months later
· 6 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| redhat-SADPADP (enrichment) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 1.0% · top 37% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
- affected < 3.11.2
Affected packages
From reviewed advisories of the GitHub Advisory Database.
References (7)
- https://github.com/patriksimek/vm2/security/advisories/GHSA-9vg3-4rfj-wgcm (opens in a new tab)x_refsource_CONFIRMexploit
- https://github.com/patriksimek/vm2/commit/c33c2bb19a822847f4e01d8d87b28dd5b2c86b3e (opens in a new tab)x_refsource_MISC
- https://access.redhat.com/errata/RHSA-2026:50850 (opens in a new tab)x_refsource_MISCvendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-44009 (opens in a new tab)x_refsource_MISCvdb-entryx_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2477185 (opens in a new tab)x_refsource_MISCissue-trackingx_refsource_REDHAT
- https://github.com/patriksimek/vm2/releases/tag/v3.11.2 (opens in a new tab)x_refsource_MISC
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44009.json (opens in a new tab)x_refsource_MISCx_sadp-csaf-vex
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-9vg3-4rfj-wgcm (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-44009)Record last updated .