Security readout for executives and security teams
Plain-English summary
Applications using vulnerable vm2 configurations may let untrusted code escape its intended sandbox and run operating-system commands on the host. Successful exploitation could expose data, alter systems, or interrupt service. The issue affects vm2 before 3.11.1 when NodeVM uses nesting: true.
Executive priority
Treat confirmed vulnerable configurations as an immediate remediation priority because sandbox escape can become complete host compromise. Prioritize externally reachable or multi-tenant code-execution services, then other systems processing untrusted code. Maintain heightened monitoring; current sources do not establish active exploitation.
Technical view
With nesting enabled, an outer NodeVM cannot enforce require: false against importing vm2. Sandbox code can access vm2, create an inner NodeVM with unrestricted module settings, and reach host command execution. Version 3.11.1 fixes the flaw.
Likely exposure
Exposure requires vm2 earlier than 3.11.1, NodeVM configured with nesting: true, and execution of untrusted code. Applications without that configuration are not identified as affected by the supplied evidence. Internet exposure increases urgency but is not required for compromise.
Exploitation context
The CVSS 3.1 score is 9.9, reflecting low-complexity compromise with high confidentiality, integrity, and availability impact. The supplied record does not list this CVE in KEV and provides no evidence of active exploitation in the wild.
Researcher notes
CWE-284 and CWE-1100 are assigned. The security boundary fails through nested VM construction rather than the outer NodeVM directly honoring forbidden require access. Validate configuration and resolved runtime versions without executing escape payloads. The supplied sources do not describe exploitation prevalence or reliable indicators of compromise.
Mitigation direction
- Upgrade vm2 to version 3.11.1 or later.
- Disable nesting until the upgrade is complete where operationally feasible.
- Suspend untrusted-code execution on vulnerable NodeVM deployments if nesting cannot be disabled.
- Review the upstream advisory and applicable Red Hat guidance for environment-specific remediation.
Validation and detection
- Inventory applications and dependency trees for vm2 versions earlier than 3.11.1.
- Identify NodeVM creation paths and confirm whether nesting: true is configured.
- Determine which affected NodeVM instances process user-controlled or otherwise untrusted code.
- After remediation, verify deployed artifacts resolve vm2 3.11.1 or later.
- Review host and application telemetry for unexpected child processes or commands from sandbox services.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-1100: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCWE-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-44007 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
2 official scoresWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H3.16redhat-SADPCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H2.36GitHub_MVulnerability scoring details
Base CVSS 3.1 score
9.9CriticalVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Base CVSS 3.1 score
9.1CriticalVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- ADP timelineredhat-SADP
Made public.
- CVE publishedCVE Program
The CVE record was published.
- ADP timelineredhat-SADP
Reported to Red Hat.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
- 2026-05-13T18:01:46.215Z: Reported to Red Hat.
- 2026-05-13T17:33:19.799Z: Made public.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/patriksimek/vm2/security/advisories/GHSA-8hg8-63c5-gwmxCVE reference, GitHub_M · x_refsource_CONFIRM
- https://access.redhat.com/security/cve/CVE-2026-44007CVE reference, redhat-SADP · vdb-entry, x_refsource_REDHAT
- RHBZ#2477198CVE reference, redhat-SADP · issue-tracking, x_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44007.jsonCVE reference, redhat-SADP · x_sadp-csaf-vex
- https://access.redhat.com/errata/RHSA-2026:50850CVE reference, redhat-SADP · vendor-advisory, x_refsource_REDHAT
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Insufficient Isolation of System-Dependent Functions
Insufficient Isolation of System-Dependent Functions represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.