Security readout for executives and security teams
Plain-English summary
Applications using vm2 to run untrusted JavaScript can have their Node.js host process deliberately crashed. This primarily threatens service availability, potentially causing outages or repeated disruption. The supplied evidence identifies vm2 versions before 3.11.0 as affected and 3.11.0 as fixed.
Executive priority
Prioritize remediation promptly for public or multi-tenant code-execution services because an unauthenticated attacker may cause outages. Internally isolated deployments are lower urgency but still require upgrading. There is no supplied evidence of active exploitation or confidentiality and integrity impact.
Technical view
A Promise-constructor rejection can propagate from the sandbox to the host as an unhandled rejection, crashing Node.js. The earlier CVE-2026-22709 fix sanitized rejection callbacks in overridden .then() and .catch() methods but missed this executor path. The stated impact is host-process denial of service, not demonstrated data disclosure or modification.
Likely exposure
Exposure exists where vm2 versions below 3.11.0 execute untrusted or attacker-influenced JavaScript. Network-facing services offering code evaluation are especially concerning because the CVSS vector states remote, low-complexity, unauthenticated exploitation without user interaction. Actual reachability depends on each application’s integration and controls.
Exploitation context
The supplied sources describe a single-Promise trigger and assign CVSS 8.6, reflecting severe availability impact across a security boundary. However, the bundle marks this CVE as absent from KEV and provides no evidence of active exploitation. Treat exploitation status as unconfirmed.
Researcher notes
CWE-248 applies because an uncaught exception condition reaches the host. The important regression boundary is the Promise executor-to-unhandledRejection path omitted by the earlier callback sanitization. Validate version and trust-boundary exposure without reproducing the crash in production. The bundle does not establish arbitrary host code execution.
Mitigation direction
- Upgrade vm2 to version 3.11.0 or later.
- Prioritize internet-facing services that execute untrusted or user-controlled JavaScript.
- Restrict access to sandbox execution features until affected deployments are upgraded.
- Apply relevant vendor guidance for packaged vm2 distributions, including applicable Red Hat advisories.
Validation and detection
- Inventory direct and transitive vm2 dependencies across applications and lockfiles.
- Confirm every deployed vm2 version is 3.11.0 or later.
- Identify routes, jobs, or APIs that pass attacker-influenced code into vm2.
- Review Node.js process logs for unexplained unhandled rejections and crashes.
- Verify upgraded services remain healthy under approved defensive regression testing.
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-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
- 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.
Uncaught Exception
Uncaught Exception represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.