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

26 Oct 2026, 17:10

Type	Values Removed	Values Added
Summary		(es) vm2 es una VM/sandbox de código abierto para Node.js. Antes de 3.11.0, el código en sandbox puede llamar a Buffer.alloc() con un tamaño arbitrario para asignar memoria directamente en el heap del host. Debido a que Buffer.alloc es una llamada nativa síncrona de C++, la opción de tiempo de espera de vm2 no puede interrumpirla. Una sola solicitud puede agotar la memoria del host y bloquear el proceso con un ERROR FATAL: Límite de heap alcanzado. Esta vulnerabilidad está corregida en 3.11.0.

Information

Published : 2026-05-13 18:16

Updated : 2026-10-26 17:10

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

{"id": "CVE-2026-44004", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-44004", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-13T18:07:58.206805Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.6, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 4.0, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "patriksimek", "product": "vm2", "versions": [{"status": "affected", "version": "< 3.11.0"}]}]}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "affectedData": [{"cpes": ["cpe:/a:redhat:ansible_portal:2.1"], "vendor": "Red Hat", "product": "Red Hat Ansible Automation Platform 2.1", "versions": [{"status": "unaffected", "version": "1785854226", "lessThan": "*", "versionType": "rpm"}], "packageName": "ansible-automation-platform/automation-portal", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhdh:1"], "vendor": "Red Hat", "product": "Red Hat Developer Hub", "packageName": "rhdh/rhdh-hub-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}]}], "published": "2026-05-13T18:16:17.123", "references": [{"url": "https://github.com/patriksimek/vm2/security/advisories/GHSA-6785-pvv7-mvg7", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:50850", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-44004", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2477195", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://github.com/patriksimek/vm2/security/advisories/GHSA-6785-pvv7-mvg7", "tags": ["Exploit", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}, {"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44004.json", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-770"}]}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "description": [{"lang": "en", "value": "CWE-1285"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "vm2 es una VM/sandbox de c\u00f3digo abierto para Node.js. Antes de 3.11.0, el c\u00f3digo en sandbox puede llamar a Buffer.alloc() con un tama\u00f1o arbitrario para asignar memoria directamente en el heap del host. Debido a que Buffer.alloc es una llamada nativa s\u00edncrona de C++, la opci\u00f3n de tiempo de espera de vm2 no puede interrumpirla. Una sola solicitud puede agotar la memoria del host y bloquear el proceso con un ERROR FATAL: L\u00edmite de heap alcanzado. Esta vulnerabilidad est\u00e1 corregida en 3.11.0."}], "lastModified": "2026-10-26T17:10:03.270", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:vm2_project:vm2:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "6DD48308-6219-4C66-9BE7-246EE56FB834", "versionEndExcluding": "3.11.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}