{"id":"CVE-2026-92958","revision":"33f3800df2fa49d88dea8913b0c293d7","records":[{"revision":"33f3800df2fa49d88dea8913b0c293d7","observedAt":"2026-10-25T16:19:28.255+00:00","statement":{"source":"nvd","id":"CVE-2026-92958","aliases":[],"title":"vm2 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 …","description":"vm2 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.","state":0,"publishedAt":"2026-09-17T14:18:01.97+00:00","modifiedAt":"2026-09-18T20:17:31.243+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · disclosure@vulncheck.com · Secondary","vector":"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","score":8.4,"severity":"HIGH"},{"system":"CVSS 3.1 · disclosure@vulncheck.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L","score":8.5,"severity":"HIGH"}],"references":["https://github.com/patriksimek/vm2/security/advisories/GHSA-6rh5-qq4q-97xh","https://www.vulncheck.com/advisories/vm2-before-3.11.7-denylist-bypass-via-fs-promises"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-92958","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-269"],"productCriteria":[],"sourceDates":{"published":"2026-09-17T14:18:01.970","lastModified":"2026-09-18T20:17:31.243"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-92958","identifiers":["CVE-2026-92958"]},"retained":false,"historicalAffected":[]}],"coverage":[]}