{"id":"GHSA-mgj2-jqjq-q8gg","title":"Duplicate Advisory: vm2: Host-returned Promise rejection can bypass vm2's unhandled-rejection hardening and terminate the host process","summary":"Duplicate Advisory: vm2: Host-returned Promise rejection can bypass vm2's unhandled-rejection hardening and terminate the host process","severity":"critical","cvss":8.6,"cwe":["CWE-248"],"vendor":"vm2","product":"vm2","ecosystem":"npm","affected":["vm2 >= 3.10.0, <= 3.11.7"],"published":"2026-09-17","updated":"2026-10-05","sourceUpdated":"2026-10-05T22:45:33Z","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-mgj2-jqjq-q8gg","references":[{"url":"https://github.com/patriksimek/vm2/security/advisories/GHSA-gjq8-xm47-88rc"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92954"},{"url":"https://www.vulncheck.com/advisories/vm2-3.10.0-through-3.11.5-denial-of-service-via-host-promise"},{"url":"https://github.com/advisories/GHSA-mgj2-jqjq-q8gg"}],"tags":["ghsa","npm"],"ingestedAt":"2026-10-05T23:36:21.178Z","slug":"GHSA-mgj2-jqjq-q8gg","body":"## Overview\n\n## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-gjq8-xm47-88rc. This link is maintained to preserve external references.\n\n## Original Description\nvm2 is a sandbox library for running untrusted JavaScript in Node.js. In versions >= 3.10.0 and <= 3.11.7, Promises returned from the host realm into the sandbox are not marked as handled at the bridge boundary; only Promises created inside the sandbox are wrapped with a rejection-swallowing handler (lib/setup-sandbox.js), and the bridge only installs host-side rejection sanitizers when sandbox code calls .then/.catch/.finally. As a result, code running in the sandbox can invoke a host function that returns a rejected Promise (for example events.once() exposed via the NodeVM events builtin, or any embedder-provided Promise-returning API) and simply ignore the return value, leaving the host Promise unhandled so that Node.js's default unhandled-rejection behavior terminates the host process. This is an incomplete fix of GHSA-hw58-p9xv-2mjh. The issue is fixed in version 3.11.8.\n\n## Affected packages\n\n- `vm2 >= 3.10.0, <= 3.11.7`\n\n## Remediation\n\nRefer to the advisory for the patched release.","depth":"midnight","depthScore":47,"depthScoreParts":{"impact":47.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}