Sandbox Escape in vm2
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-78.
Summary
vm2 is an open source vm/sandbox for Node.js. In vm2 for versions up to and including 3.9.19, Node.js custom inspect function allows attackers to escape the sandbox and run arbitrary code. This may result in Remote Code Execution, assuming the attacker has arbitrary code execution primitive inside the context of vm2 sandbox. There are no patches and no known workarounds. Users are advised to find an alternative software.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| patriksimek | vm2 | up to 3.9.19 | — | No fix listed | CNA |
| — | vm2 (npm) | up to 3.9.19 | — | No fix listed | GHSA-g644-9gfx-q4q4 |
- vm2 Vendorpatriksimek Affected up to 3.9.19 Fixed in — No fix listed CNA
- vm2 (npm) Vendor— Affected up to 3.9.19 Fixed in — No fix listed GHSA-g644-9gfx-q4q4
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:vm2_project:vm2:*:*:*:*:*:node.js:*:* | up to 3.9.19 | Vulnerable | patriksimek |
- cpe:2.3:a:vm2_project:vm2:*:*:*:*:*:node.js:*:* Versions up to 3.9.19 Vulnerable ·patriksimek
Remediation
Red Hat 2 advisories
- RHSA-2023:4980 Released 2023-09-05 · Red Hat rating CriticalRed Hat Advanced Cluster Management 2.6.7 security and bug fix updates
- Red Hat Advanced Cluster Management for Kubernetes 2.6 for RHEL 8 rhacm2/acm-governance-policy-addon-controller-rhel8, rhacm2/acm-grafana-rhel8, rhacm2/acm-must-gather-rhel8 +45
- RHSA-2023:4972 Released 2023-09-05 · Red Hat rating CriticalMulticluster Engine for Kubernetes 2.1.8 security updates and bug fixes
- multicluster engine for Kubernetes 2.1 for RHEL 8 multicluster-engine/agent-service-rhel8, multicluster-engine/apiserver-network-proxy-rhel8, multicluster-engine/assisted-image-service-rhel8 +37
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Advanced Cluster Management for Kubernetes 2 | Affected | No fix yet |
Timeline
- 2026-10-02 Threatist record created from CVE-2023-37903
- 2026-10-03 Alias added: GHSA-g644-9gfx-q4q4
References
Advisory 3
More patriksimek Vm2 vulnerabilities
- TI-2023-14382 Sandbox Escape in vm2 CVSS 3.1CRITICAL 10.0
- TI-2023-13478 vm2 Sandbox Escape vulnerability CVSS 3.1CRITICAL 10.0
- TI-2026-33200 vm2: Sandbox Breakout Using Async Generator CVSS 3.1CRITICAL 9.8
- TI-2026-32052 vm2: Sandbox Breakout Through Null Proto Exception CVSS 3.1CRITICAL 9.8
- TI-2026-32051 vm2 has sandbox breakout via `neutralizeArraySpeciesBatch` CVSS 3.1CRITICAL 9.8
- TI-2026-32049 vm2: Sandbox Escape CVSS 3.1CRITICAL 10.0
Sources
- CVE-2023-37903 · CVE Program
- CVE-2023-37903 · NVD
- FIRST EPSS
- GHSA-g644-9gfx-q4q4 · GitHub Advisory Database · CC BY 4.0
- CVE-2023-37903 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences