{"id":"GHSA-28q4-xrqh-9479","summary":"Duplicate Advisory: vm2: NodeVM node:-prefixed negative builtin deny bypass exposes child_process","details":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-8686-vhfx-7r3j. This link is maintained to preserve external references.\n\n## Original Description\nvm2 through 3.11.6 does not normalize `node:`-prefixed builtin specifiers when evaluating user-supplied negative (deny) entries in a NodeVM wildcard require policy. Although NodeVM strips the `node:` prefix during require() resolution, negative wildcard entries are matched by exact string comparison against the canonical builtin names, so a policy such as `new NodeVM({ require: { builtin: ['*', '-node:child_process'] } })` fails to deny the canonical `child_process` module. Sandboxed code can therefore obtain the host `child_process` builtin via `require('child_process')` or `require('node:child_process')`, gaining references to process-spawning APIs such as execSync and spawn, which is equivalent to host command-execution capability for untrusted sandbox code. Fixed in vm2 3.11.7. (Suggested title: \"vm2 before 3.11.7: NodeVM builtin deny-list bypass via node:-prefixed specifiers exposes child_process\")","modified":"2026-10-01T15:45:05.654409040Z","published":"2026-09-17T15:32:16Z","withdrawn":"2026-10-01T15:35:49Z","database_specific":{"github_reviewed_at":"2026-10-01T15:35:49Z","nvd_published_at":"2026-09-17T14:18:01Z","cwe_ids":["CWE-269"],"severity":"CRITICAL","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/patriksimek/vm2/security/advisories/GHSA-8686-vhfx-7r3j"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92957"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/vm2-before-3.11.7-authentication-bypass-via-node-prefix"}],"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-28q4-xrqh-9479/GHSA-28q4-xrqh-9479.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:H/I:H/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/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"}]}