EUVD Vulnerability Catalog
EUVD-2026-81593
Severity: CRITICAL
Base Score: 9.3
CVSS Version: 4.0
Vulnerability Description
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 Vector Analysis
Below is the complete, human-readable breakdown of the CVSS metric string: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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Attack Vector (AV): Network
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Attack Complexity (AC): Low
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Attack Requirements (AT): None
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Privileges Required (PR): None
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User Interaction (UI): None
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Vulnerability Confidentiality Impact (VC): High
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Vulnerability Integrity Impact (VI): High
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Vulnerability Availability Impact (VA): High
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Subsequent Confidentiality Impact (SC): None
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Subsequent Integrity Impact (SI): None
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Subsequent Availability Impact (SA): None
Affected Vendors & Systems
Vendor
patriksimek
References & Advisory Links
- https://github.com/patriksimek/vm2/security/advisories/GHSA-27g9-p43v-cw3v
- https://github.com/patriksimek/vm2/commit/7b26e81087ec88c287d9a4812f969d412f32774e
- https://github.com/patriksimek/vm2/commit/4635ddd85839461c8ad791990023a477efefe7bd
- https://www.vulncheck.com/advisories/vm2-3.10.2-through-3.11.6-sandbox-escape-via-promise-protector
Metadata Profile
Database Authority
European Union Agency for Cybersecurity (ENISA) EUVD
Assigner
VulnCheck
EPSS Probability
0.58
Known Aliases
CVE-2026-92944
GHSA-hwr5-cm8v-c76q
Published On
2026-09-17
Last Updated
2026-09-19