Open-source package vulnerability · npm

GHSA-hwr5-cm8v-c76q: Duplicate Advisory: vm2 sandbox escape on Node.js 26 through a stale PromiseThenLookupChain protector

criticalCVSS 4.0 9.3 · 3.1 9.8

This advisory was withdrawn on Oct 1, 2026. The publisher no longer considers it a valid vulnerability.

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-27g9-p43v-cw3v. This link is maintained to preserve external references. Original 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.

Published Sep 17, 2026 · Updated Oct 1, 2026

Affected packages

vm2

Ecosystem: npm
Affected: >= 3.10.2, <= 3.11.6
Fixed in: No patched version yet
Check: npm ls vm2

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-27g9-p43v-cw3v. This link is maintained to preserve external references.

Original 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.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

More npm vulnerabilities

All npm entries