Security readout for executives and security teams
Plain-English summary
Applications using vm2 to isolate untrusted Node.js code may not actually contain it. An attacker reaching that functionality could escape the sandbox and run commands on the host, potentially compromising data, software, and service availability. The source bundle rates this critical and identifies vm2 versions before 3.11.2 as affected.
Executive priority
Treat this as an urgent remediation for internet-facing or multi-tenant services that use vulnerable vm2 versions. Sandbox escape can turn limited code execution into host compromise. Establish exposure immediately, upgrade affected deployments, and investigate suspicious host activity. Systems without vm2 or already running 3.11.2 or later are outside the stated affected range.
Technical view
A cross-boundary flaw in neutralizeArraySpeciesBatch permits a getter on the array prototype to expose host-side objects inside the sandbox. Attackers may obtain the host Function object, escape vm2, and execute arbitrary host commands. The supplied CVSS 3.1 score is 9.8. Version 3.11.2 contains the fix.
Likely exposure
Exposure exists where vm2 versions earlier than 3.11.2 execute attacker-controlled or otherwise untrusted code. Practical reachability depends on how the application invokes vm2 and whether external users can submit code or influence sandboxed execution. The bundle does not identify specific downstream applications or deployments.
Exploitation context
The issue requires attacker-controlled input to reach a vulnerable vm2 sandbox. The supplied vector reports network reachability, low complexity, no privileges, and no user interaction, but application architecture determines actual access. The bundle marks KEV false and provides no evidence of active exploitation or a public proof of concept.
Researcher notes
The core trust-boundary failure involves cross-realm object handling through an array-prototype getter during neutralizeArraySpeciesBatch. CWE-1100 and CWE-668 are listed. Confirm exploitability in a controlled environment without using production payloads. The bundle establishes arbitrary host command execution potential but does not document observed exploitation, affected downstream products, or environmental preconditions beyond vulnerable vm2 use.
Mitigation direction
- Upgrade vm2 to version 3.11.2 or later.
- Prioritize systems that run externally supplied or untrusted code.
- Restrict access to sandbox-backed functionality until remediation is verified.
- Review the vm2 advisory and relevant vendor guidance for deployment-specific instructions.
Validation and detection
- Inventory direct and transitive vm2 versions in deployed applications.
- Confirm resolved dependency trees contain vm2 3.11.2 or later.
- Identify routes, jobs, or services that pass untrusted input into vm2.
- Run existing application security and regression tests after upgrading.
- Review host logs 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-668: 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 lookupCVE-2026-44008 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
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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:N/UI:N/S:U/C:H/I:H/A:H3.95.9GitHub_MCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9redhat-SADPVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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
- 2026-05-13T18:01:56.001Z: Reported to Red Hat.
- 2026-05-13T17:35:03.275Z: Made public.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/patriksimek/vm2/security/advisories/GHSA-9qj6-qjgg-37qqCVE reference, GitHub_M · x_refsource_CONFIRM
- https://access.redhat.com/security/cve/CVE-2026-44008CVE reference, redhat-SADP · vdb-entry, x_refsource_REDHAT
- RHBZ#2477201CVE reference, redhat-SADP · issue-tracking, x_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44008.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.
Exposure of Resource to Wrong Sphere
Exposure of Resource to Wrong Sphere represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.