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CVE-2026-44004

vm2: Host Process OOM DoS via Buffer.alloc (Timeout Bypass)

Published: May 13, 2026Updated: Aug 6, 2026 Sources: CVE List NVD BDUCWE-770
7.5HIGH
NVD MITRE
EPSS Score
0.4%
Top 65.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-770CWE-1285

Affected Products

Node.js Foundation
oss-project·USaka nodejs foundation, node foundation
vm2
OSS Libraries
vm2 project
oss-projectaka vm2
vm2Library
OSS Libraries / npm
patriksimek
oss-project
vm2Library
OSS Libraries / npm

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/patriksimek/vm2/security/advisories/GHSA-6785-pvv7-mvg7
github.com
https://access.redhat.com/errata/RHSA-2026:50850
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-44004
access.redhat.com
and 2 more references View all →

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