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CVE-2026-44004

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

Published: May 13, 2026Updated: May 14, 2026 Sources: CVE List NVD BDUCWE-770
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.3%
Top 76.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

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-770

Affected Products

vm2Node.js FoundationOSS Libraries
vm2patriksimek
Library
OSS Libraries / npm
vm2vm2 project
Library
OSS Libraries / npm
node.js foundationoss-projectUSOSS Librariesaka nodejs foundation, node foundation
patriksimekoss-projectOSS Libraries
vm2 projectoss-projectOSS Librariesaka vm2

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/patriksimek/vm2/security/advisories/GHSA-6785-pvv7-mvg7
github.com

Timeline

Published
May 13, 2026
Last Updated
May 14, 2026

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