{"id":"GHSA-7c3p-84r8-h79q","summary":"Duplicate Advisory: vm2: NodeVM builtin denylist bypass via fs/promises despite -fs, allowing host filesystem writes","details":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-6rh5-qq4q-97xh. This link is maintained to preserve external references.\n\n## Original Description\nvm2 through 3.11.6 contains a builtin-module denylist bypass in NodeVM. When the embedder uses the builtin wildcard together with negative entries (e.g. require: { builtin: ['*', '-fs', '-child_process'] }), negative entries are matched by exact module name in lib/builtin.js, so -fs removes only the builtin named fs and does not remove builtin subpaths such as fs/promises. Sandboxed code can therefore call require('fs/promises') or require('node:fs/promises') and reach the promise-based filesystem API despite fs being denied; node: prefix handling is likewise inconsistent (a -node:fs/promises entry does not block require('fs/promises')). Host file creation and writing were confirmed via fsp.writeFile(), and other fs/promises operations (cp, mkdir, rename, rm, rmdir, truncate, read operations, etc.) are also reachable. This issue is fixed in vm2 3.11.7.","modified":"2026-10-01T15:45:05.646497939Z","published":"2026-09-17T15:32:16Z","withdrawn":"2026-10-01T15:36:33Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2026-10-01T15:36:33Z","nvd_published_at":"2026-09-17T14:18:01Z","cwe_ids":["CWE-269"],"severity":"HIGH"},"references":[{"type":"WEB","url":"https://github.com/patriksimek/vm2/security/advisories/GHSA-6rh5-qq4q-97xh"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92958"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/vm2-before-3.11.7-denylist-bypass-via-fs-promises"}],"affected":[{"package":{"name":"vm2","ecosystem":"npm","purl":"pkg:npm/vm2"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"3.11.6"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-7c3p-84r8-h79q/GHSA-7c3p-84r8-h79q.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:H/SA:L/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"}]}