vm2: Transformer Fast-Path Bypass Exposes Internal State Variable
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-693.
Summary
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, vm2's code transformer has a performance optimization that skips AST analysis when the code does not contain catch, import, or async keywords. This fast-path bypass allows sandboxed code to directly access the internal VM2_INTERNAL_STATE_DO_NOT_USE_OR_PROGRAM_WILL_FAIL variable, which exposes internal security functions (handleException, wrapWith, import). This vulnerability is fixed in 3.11.0.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| patriksimek | vm2 | before 3.11.0 | 3.11.0 | Patch available | CNA |
| — | vm2 (npm) | before 3.11.0 | 3.11.0 | Patch available | GHSA-wp5r-2gw5-m7q7 |
- vm2 Vendorpatriksimek Affected before 3.11.0 Fixed in 3.11.0 Patch available CNA
- vm2 (npm) Vendor— Affected before 3.11.0 Fixed in 3.11.0 Patch available GHSA-wp5r-2gw5-m7q7
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:vm2_project:vm2:*:*:*:*:*:node.js:*:* | before 3.11.0 | Vulnerable | patriksimek |
- cpe:2.3:a:vm2_project:vm2:*:*:*:*:*:node.js:*:* Versions before 3.11.0 Vulnerable ·patriksimek
Remediation
- Fix · CNA vm2 (patriksimek) Fixed in 3.11.0
- Fix · GHSA-wp5r-2gw5-m7q7 vm2 (npm) Fixed in 3.11.0 Advisory →
Red Hat 1 advisory
- RHSA-2026:50850 Released 2026-08-05 · Red Hat rating ImportantRed Hat Ansible Automation Platform 2.1 security update
- Red Hat Ansible Automation Platform 2.1 registry.redhat.io/ansible-automation-platform/automation-portal
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Ansible Automation Platform 2.1 | Fixed | RHSA-2026:50850 |
Not affected: 1 product
- Red Hat Developer Hub 1
Timeline
- 2026-10-02 Threatist record created from CVE-2026-44003
- 2026-10-03 Alias added: GHSA-wp5r-2gw5-m7q7
- 2026-10-27 Affected versions changed · Red Hat
- 2026-11-05 1 new reference · GHSA-wp5r-2gw5-m7q7
References
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-2026-44003 · CVE Program
- CVE-2026-44003 · NVD
- FIRST EPSS
- GHSA-wp5r-2gw5-m7q7 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-44003 · 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