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CVE

CVE-2026-44007

vm2: nesting: true bypasses require: false, allowing sandbox escape to arbitrary OS command execution
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CVE

CVE-2026-44007

vm2: nesting: true bypasses require: false, allowing sandbox escape to arbitrary OS command execution

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.

Package Versions Affected

Package Version
patch Availability
eslint-plugin-n
Available
Available by request
eslint-plugin-n
Available
Available by request
eslint-plugin-n
Available
Available by request
eslint-plugin-n
Available
Available by request
eslint-plugin-n
Available
Available by request
eslint-plugin-n
Available
Available by request

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.1
-
3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
C
H
U
9.1
-
3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Related Resources

No items found.

References

http://www.openwall.com/lists/oss-security/2026/05/05/11, https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44007.json, https://access.redhat.com/errata/RHSA-2026:50850, https://access.redhat.com/security/cve/CVE-2026-44007, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44007.json, https://github.com/patriksimek/vm2/security/advisories/GHSA-8hg8-63c5-gwmx, https://nvd.nist.gov/vuln/detail/CVE-2026-44007, https://bugzilla.redhat.com/show_bug.cgi?id=2477198

Severity

9.1

CVSS Score
0
10

Basic Information

Base CVSS
9.1
EPSS Probability
0.0096%
EPSS Percentile
0.59874%
Introduced Version
0
Fix Available
46cbbdde4e19b743974c942278080231004146ca

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