CVE-2026-92944

vm2 versions 3.10.2 through 3.11.6 contain a sandbox escape vulnerability on Node.js 26 where Promise.prototype.finally() bypasses vm2's wrapper protections due to a stale PromiseThenLookupChain protector in V8 14.6. Attackers can exploit this by creating an async function that returns a Promise with an attacker-controlled constructor Symbol.species, allowing them to reach the host Function constructor and process object for arbitrary code execution.

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/commit/4635ddd85839461c8ad791990023a477efefe7bd
https://github.com/patriksimek/vm2/commit/7b26e81087ec88c287d9a4812f969d412f32774e
https://github.com/patriksimek/vm2/security/advisories/GHSA-27g9-p43v-cw3v
https://www.vulncheck.com/advisories/vm2-3.10.2-through-3.11.6-sandbox-escape-via-promise-protector

Configurations

No configuration.

History

17 Sep 2026, 14:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-17 14:17

Updated : 2026-09-17 14:17

NVD link : CVE-2026-92944

Mitre link : CVE-2026-92944

CVE.ORG link : CVE-2026-92944

JSON object : View

Products Affected

No product.

CWE

CWE-693

Protection Mechanism Failure

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