CVE-2026-44007
vm2: nesting: true bypasses require: false, allowing sandbox escape to arbitrary OS command execution
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.1, when a NodeVM is created with nesting: true, sandbox code can unconditionally require('vm2') regardless of the outer VM's require configuration — including require: false. With access to vm2, the sandbox constructs a new inner NodeVM with its own unrestricted require settings and executes arbitrary OS commands on the host. Any application that runs untrusted code inside a NodeVM with nesting: true is fully compromised. This vulnerability is fixed in 3.11.1.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Critical9.1 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
| redhat-SADPADP (enrichment) | 3.1 | Critical9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Critical9.1 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 1.0% · top 37% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.1.
Weakness
Affected products
- affected < 3.11.1
Affected packages
From reviewed advisories of the GitHub Advisory Database.
References (8)
- https://github.com/patriksimek/vm2/security/advisories/GHSA-8hg8-63c5-gwmx (opens in a new tab)x_refsource_CONFIRM
- https://github.com/patriksimek/vm2/commit/46cbbdde4e19b743974c942278080231004146ca (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-2026-44007 (opens in a new tab)x_refsource_MISCvdb-entryx_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2477198 (opens in a new tab)x_refsource_MISCissue-trackingx_refsource_REDHAT
- https://github.com/patriksimek/vm2/releases/tag/v3.11.1 (opens in a new tab)x_refsource_MISC
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44007.json (opens in a new tab)x_refsource_MISCx_sadp-csaf-vex
- http://www.openwall.com/lists/oss-security/2026/05/05/11 (opens in a new tab)x_refsource_MISC
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-8hg8-63c5-gwmx (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-2026-44007)Record last updated .