CVE catalog
CVE-2026-44004
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, sandboxed code can call Buffer.alloc() with an arbitrary size to allocate memory directly on the host heap. Because Buffer.alloc is a syn
- Severity
- High · CVSS 8.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.42% · Oct 25, 2026
A flaw was found in vm2 (before 3.11.0). Sandboxed code can call Buffer.alloc() with arbitrary size to allocate on the host heap synchronously; vm2 timeout cannot interrupt the native C++ call, allowing a single request to exhaust host memory and crash the process. Fixed in 3.11.0. vm2: vm2: Denial of Service via host memory exhaustion vm2 is vulnerable to denial of service via unbounded host heap allocation through Buffer.alloc() from sandboxed code. A remote unauthenticated attacker who can submit code to the sandbox may exhaust host memory and crash the Node.js process. Fixed in vm2 3.11.0. The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | vm2 | Not reported | 3.11.0 | fixed |
| Cpe | vm2 | Not reported | 3.11.0 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | vm2 | cpe | Not reported | 3.11.0 | Not reported | Not reported | Not reported |
| Cpe | vm2 | cpe | Not reported | 3.11.0 | Not reported | NVD-CVE-2026-44004 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://access.redhat.com/errata/RHSA-2026:50850]
- [https://access.redhat.com/security/cve/CVE-2026-44004]
- [https://bugzilla.redhat.com/show_bug.cgi?id=2477195]
- [https://github.com/patriksimek/vm2/security/advisories/GHSA-6785-pvv7-mvg7]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-44004]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44004.json]
[FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX]