{"id":"GHSA-mgj2-jqjq-q8gg","summary":"Duplicate Advisory: vm2: Host-returned Promise rejection can bypass vm2's unhandled-rejection hardening and terminate the host process","details":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-gjq8-xm47-88rc.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 \u003e= 3.10.0 and \u003c= 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The issue is fixed in version 3.11.8.","modified":"2026-10-05T23:00:05.000844711Z","published":"2026-09-17T15:32:16Z","withdrawn":"2026-10-05T22:45:31Z","database_specific":{"severity":"CRITICAL","github_reviewed":true,"github_reviewed_at":"2026-10-05T22:45:31Z","nvd_published_at":"2026-09-17T14:18:01Z","cwe_ids":["CWE-248"]},"references":[{"type":"WEB","url":"https://github.com/patriksimek/vm2/security/advisories/GHSA-gjq8-xm47-88rc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92954"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/vm2-3.10.0-through-3.11.5-denial-of-service-via-host-promise"}],"affected":[{"package":{"name":"vm2","ecosystem":"npm","purl":"pkg:npm/vm2"},"ranges":[{"type":"SEMVER","events":[{"introduced":"3.10.0"},{"last_affected":"3.11.7"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-mgj2-jqjq-q8gg/GHSA-mgj2-jqjq-q8gg.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}