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

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Summary

CVECVE-2026-44004
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-13 18:16:17 UTC
Updated2026-07-15 02:21:47 UTC
Descriptionvm2 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.

Risk And Classification

Primary CVSS: v3.1 8.6 HIGH from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

EPSS: 0.004240000 probability, percentile 0.344120000 (date 2026-07-16)

Problem Types: CWE-770 | CWE-1285 | CWE-770 CWE-770: Allocation of Resources Without Limits or Throttling | CWE-1285 Improper Validation of Specified Index, Position, or Offset in Input

VersionSourceTypeScoreSeverityVector
3.1ADPCVSS8.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.10b0ca135-0b70-47e7-9f44-1890c2a1c46cSecondary8.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Vm2 Project Vm2 All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Patriksimek Vm2 affected < 3.11.0 Not specified
ADP Red Hat Red Hat Developer Hub Not specified Not specified
ADP Red Hat Self-service Automation Portal 2 Not specified Not specified

References

ReferenceSourceLinkTags
security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44004.json 0b0ca135-0b70-47e7-9f44-1890c2a1c46c security.access.redhat.com
access.redhat.com/security/cve/CVE-2026-44004 0b0ca135-0b70-47e7-9f44-1890c2a1c46c access.redhat.com
bugzilla.redhat.com/show_bug.cgi 0b0ca135-0b70-47e7-9f44-1890c2a1c46c bugzilla.redhat.com
github.com/patriksimek/vm2/security/advisories/GHSA-6785-pvv7-mvg7 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com Exploit, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

SourceTimeEvent
ADP2026-05-13T18:01:38.304ZReported to Red Hat.
ADP2026-05-13T17:31:16.281ZMade public.

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