CVE-2026-92944

9.8 CRITICALpublic exploit available

Published 2026-09-17 · Updated 2026-09-19

AI risk analysis

Summary: This vulnerability allows attackers to bypass sandbox protections in vm2 versions 3.10.2 through 3.11.6 by exploiting the Promise.prototype.finally() method, leading to arbitrary code execution.
Exploitability: Exploitation requires the attacker to control the constructor Symbol.species within an async function, making it moderately difficult but feasible under certain conditions.
Blast radius: If exploited, this could result in full system compromise, as it allows arbitrary code execution within the Node.js environment.
Detection: No reliable host or network indicator is derivable from the published description.
Prioritized remediation: Upgrade to vm2 version 3.11.7 or later.

rcevm2nodejspromisesandbox

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD 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

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

Weaknesses

CWE-693

Public exploit & PoC references

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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