Security readout for executives and security teams
Plain-English summary
Applications using affected vm2 configurations to run untrusted JavaScript may allow that code to escape its intended sandbox and execute operating-system commands. A successful compromise could expose or alter host data and disrupt services. The flaw is fixed in vm2 3.11.1.
Executive priority
Treat confirmed affected deployments as an immediate remediation priority because successful exploitation grants host-level command execution with confidentiality, integrity, and availability impact. Prioritize services accepting customer, tenant, plugin, or other untrusted code.
Technical view
Before vm2 3.11.1, NodeVM with nesting enabled permits sandboxed code to load vm2 even when require is disabled. It can then create an inner NodeVM with unrestricted module access, escaping the outer security policy and reaching host command execution. The CVSS 3.1 score is 9.9.
Likely exposure
Exposure requires vm2 earlier than 3.11.1, NodeVM, nesting set to true, and execution of untrusted code. Applications without this configuration are not identified as affected by the supplied evidence. Internet exposure depends on whether external users can submit code to the application.
Exploitation context
The supplied bundle does not establish active exploitation, and this CVE is not listed as KEV in the bundle. Exploitation nevertheless has low stated complexity and requires access sufficient to supply code to the vulnerable sandbox; no user interaction is required.
Researcher notes
The issue is categorized under CWE-1100 and CWE-284. The security boundary fails because the nested VM can redefine module-access policy. Scope changed in the CVSS vector, supporting impact beyond the sandbox. The supplied evidence names no specific detection signature or confirmed exploitation campaign.
Mitigation direction
- Upgrade vm2 to version 3.11.1 or later.
- Disable NodeVM nesting until the upgrade is complete.
- Suspend untrusted-code execution where neither upgrade nor configuration change is immediately possible.
- Review vendor and distribution advisories for environment-specific packages and updates.
Validation and detection
- Inventory direct and transitive vm2 versions in applications and deployed artifacts.
- Identify every NodeVM configuration and verify whether nesting is enabled.
- Confirm externally supplied or otherwise untrusted code cannot reach affected configurations.
- Verify production deployments resolve vm2 to version 3.11.1 or later.
- Review relevant execution records for suspicious activity; the supplied sources provide no specific indicators.
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.