{"id":"GHSA-7c3p-84r8-h79q","title":"Duplicate Advisory: vm2: NodeVM builtin denylist bypass via fs/promises despite -fs, allowing host filesystem writes","summary":"Duplicate Advisory: vm2: NodeVM builtin denylist bypass via fs/promises despite -fs, allowing host filesystem writes","severity":"high","cvss":8.5,"cwe":["CWE-269"],"vendor":"vm2","product":"vm2","ecosystem":"npm","affected":["vm2 <= 3.11.6"],"published":"2026-09-17","updated":"2026-10-01","sourceUpdated":"2026-10-01T15:36:34Z","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-7c3p-84r8-h79q","references":[{"url":"https://github.com/patriksimek/vm2/security/advisories/GHSA-6rh5-qq4q-97xh"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92958"},{"url":"https://www.vulncheck.com/advisories/vm2-before-3.11.7-denylist-bypass-via-fs-promises"},{"url":"https://github.com/advisories/GHSA-7c3p-84r8-h79q"}],"tags":["ghsa","npm"],"ingestedAt":"2026-10-01T15:48:17.823Z","slug":"GHSA-7c3p-84r8-h79q","body":"## Overview\n\n## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-6rh5-qq4q-97xh.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.\n\n## Affected packages\n\n- `vm2 <= 3.11.6`\n\n## Remediation\n\nRefer to the advisory for the patched release.","depth":"twilight","depthScore":47,"depthScoreParts":{"impact":46.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}