CVE-2026-44004CWE-1285CWE-770denial-of-service

CVE-2026-44004

High · published May 13, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
51.2
In the wild
Unconfirmed
What it is

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 synchronous C++ native call, vm2's timeout option cannot interrupt it. A single request can exhaust host memory and crash the process with a FATAL ERROR: Reached heap limit. This vulnerability is fixed in 3.11.0.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00665 · 51.2th percentile
Weaknesses
CWE-1285 · Improper Validation of Specified Index, Position, or Offset in Input; CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-05-13T22:16Z
Affected products (1)
ProductVersionsFixed in
vm2_project/vm2< 3.11.03.11.0
References (6)
https://github.com/patriksimek/vm2/security/advisories/GHSA-6785-pvv7-mvg7 · [email protected]https://access.redhat.com/errata/RHSA-2026:50850 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://access.redhat.com/security/cve/CVE-2026-44004 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://bugzilla.redhat.com/show_bug.cgi?id=2477195 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46chttps://github.com/patriksimek/vm2/security/advisories/GHSA-6785-pvv7-mvg7 · 134c704f-9b21-4f2e-91b3-4a467353bcc0https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44004.json · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
EPSS history
Timeline
  • 13 MAY 17:31Z
    vm2: Host Process OOM DoS via Buffer.alloc (Timeout Bypass)
    cvelistv5