CVE-2026-26956

vm2 is an open source vm/sandbox for Node.js. In version 3.10.4, vm2 is vulnerable to full sandbox escape with arbitrary code execution. Attacker code inside VM.run() obtains host process object and runs host commands with zero host cooperation. This issue has been patched in version 3.10.5.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/patriksimek/vm2/releases/tag/v3.10.5	Release Notes
https://github.com/patriksimek/vm2/security/advisories/GHSA-ffh4-j6h5-pg66	Exploit Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-26956
https://bugzilla.redhat.com/show_bug.cgi?id=2466548
https://github.com/patriksimek/vm2/security/advisories/GHSA-ffh4-j6h5-pg66	Exploit Vendor Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26956.json

Configurations

Configuration 1 (hide)

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

History

26 Oct 2026, 19:10

Type	Values Removed	Values Added
Summary		(es) vm2 es una vm/sandbox de código abierto para Node.js. En la versión 3.10.4, vm2 es vulnerable a un escape completo de la sandbox con ejecución de código arbitrario. El código del atacante dentro de VM.run() obtiene el objeto de proceso del host y ejecuta comandos del host sin ninguna cooperación del host. Este problema ha sido parcheado en la versión 3.10.5.

Information

Published : 2026-05-04 17:16

Updated : 2026-10-26 19:10

NVD link : CVE-2026-26956

Mitre link : CVE-2026-26956

CVE.ORG link : CVE-2026-26956

JSON object : View

Products Affected

vm2_project

vm2

CWE

CWE-693

Protection Mechanism Failure

CWE-653

Improper Isolation or Compartmentalization

{"id": "CVE-2026-26956", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-26956", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-05-05T13:09:59.977323Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "patriksimek", "product": "vm2", "versions": [{"status": "affected", "version": "= 3.10.4"}]}]}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "affectedData": [{"cpes": ["cpe:/a:redhat:rhdh:1"], "vendor": "Red Hat", "product": "Red Hat Developer Hub", "packageName": "rhdh/backstage-community-plugin-catalog-backend-module-scaffolder-relation-processor", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"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"}, {"cpes": ["cpe:/a:redhat:ansible_portal:2"], "vendor": "Red Hat", "product": "Self-service automation portal 2", "packageName": "ansible-automation-platform/automation-portal", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}]}], "published": "2026-05-04T17:16:22.553", "references": [{"url": "https://github.com/patriksimek/vm2/releases/tag/v3.10.5", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/patriksimek/vm2/security/advisories/GHSA-ffh4-j6h5-pg66", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-26956", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2466548", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://github.com/patriksimek/vm2/security/advisories/GHSA-ffh4-j6h5-pg66", "tags": ["Exploit", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}, {"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26956.json", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-693"}]}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "description": [{"lang": "en", "value": "CWE-653"}]}], "descriptions": [{"lang": "en", "value": "vm2 is an open source vm/sandbox for Node.js. In version 3.10.4, vm2 is vulnerable to full sandbox escape with arbitrary code execution. Attacker code inside VM.run() obtains host process object and runs host commands with zero host cooperation. This issue has been patched in version 3.10.5."}, {"lang": "es", "value": "vm2 es una vm/sandbox de c\u00f3digo abierto para Node.js. En la versi\u00f3n 3.10.4, vm2 es vulnerable a un escape completo de la sandbox con ejecuci\u00f3n de c\u00f3digo arbitrario. El c\u00f3digo del atacante dentro de VM.run() obtiene el objeto de proceso del host y ejecuta comandos del host sin ninguna cooperaci\u00f3n del host. Este problema ha sido parcheado en la versi\u00f3n 3.10.5."}], "lastModified": "2026-10-26T19:10:00.163", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:vm2_project:vm2:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "E0187C39-B05F-4D67-9B5D-7CBAA800A126", "versionEndExcluding": "3.10.5"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}