Security readout for executives and security teams
Plain-English summary
CVE-2026-44001 affects vm2, a Node.js sandbox library. In versions before 3.11.0, code running inside the sandbox can escape intended error handling enough to crash the host Node.js process. The documented impact is denial of service, not data theft or code execution.
Executive priority
Treat this as a high-priority availability issue for any service that runs untrusted JavaScript through vm2. Patch quickly where vm2 is internet-facing or multi-tenant; otherwise prioritize through normal dependency remediation.
Technical view
The issue is an unhandled rejection path involving a Promise constructor. Prior fixes for CVE-2026-22709 covered .then() and .catch() onRejected handling but did not sanitize the executor-to-unhandledRejection path. CVSS 8.6 reflects network attackability, low complexity, no privileges, changed scope, and high availability impact.
Likely exposure
Exposure is likely where applications use vm2 before 3.11.0 to run untrusted or user-supplied JavaScript. Risk is higher when sandboxed execution is reachable through public APIs, automation, plugin systems, or multi-tenant services.
Exploitation context
The source bundle does not indicate active exploitation, and KEV is false. The advisory describes a simple crash condition from sandboxed code, but provides no evidence of confidentiality or integrity impact.
Researcher notes
The evidence supports a sandbox-isolation flaw causing host process denial of service through Promise rejection handling. Sources do not support claims of arbitrary code execution, data access, or active exploitation. Prior CVE-2026-22709 remediation was incomplete for this path.
Mitigation direction
- Upgrade vm2 to 3.11.0 or later.
- Inventory direct and transitive vm2 dependencies.
- Temporarily restrict untrusted JavaScript execution until upgraded.
- Check vendor advisory and Red Hat tracking for updated guidance.
- Use process supervision to reduce outage duration after crashes.
Validation and detection
- Check package manifests, lockfiles, and SBOMs for vm2 versions below 3.11.0.
- Confirm deployed services load the upgraded vm2 package.
- Identify public or tenant-facing features that execute sandboxed JavaScript.
- Review crash logs for Node.js unhandled rejection process exits.
- Confirm dependency scanners flag and close CVE-2026-44001.
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
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CWE-248: 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 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-2026-44001 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
- High
- CVSS
- 8.6 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/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:C/C:N/I:N/A:H3.94GitHub_MCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H3.94redhat-SADPVulnerability scoring details
Base CVSS 3.1 score
8.6HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Base CVSS 3.1 score
8.6HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/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
- 2026-05-13T18:02:24.091Z: Reported to Red Hat.
- 2026-05-13T17:29:00.289Z: Made public.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/patriksimek/vm2/security/advisories/GHSA-hw58-p9xv-2mjhCVE reference, GitHub_M · x_refsource_CONFIRM
- https://access.redhat.com/security/cve/CVE-2026-44001CVE reference, redhat-SADP · vdb-entry, x_refsource_REDHAT
- RHBZ#2477208CVE reference, redhat-SADP · issue-tracking, x_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44001.jsonCVE reference, redhat-SADP · x_sadp-csaf-vex
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.
Uncaught Exception
Uncaught Exception represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.