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 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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/patriksimek/vm2/security/advisories/GHSA-6785-pvv7-mvg7	Exploit Vendor Advisory
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	Exploit Vendor Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44004.json

Configurations

Configuration 1 (hide)

cpe:2.3:a:vm2_project:vm2:*:*:*:*:*:node.js:*:*

History

No history.

Information

Published : 2026-05-13 18:16

Updated : 2026-08-06 13:18

NVD link : CVE-2026-44004

Mitre link : CVE-2026-44004

CVE.ORG link : CVE-2026-44004

JSON object : View

Products Affected

vm2_project

vm2

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

CWE-1285

Improper Validation of Specified Index, Position, or Offset in Input

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