Duplicate Advisory: vm2: NodeVM custom resolution bypasses external path boundaries
## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-5h3f-q97h-ccvc. This link is maintained to preserve external references. ## Original Description vm2 before 3.12.2 contains an authorization bypass in the NodeVM external-module resolver. When an embedder configures `require.external` with a custom resolver (and `context: 'host'`), `LegacyResolver.customResolve` in lib/resolver-compat.js records the resolved module directory in `this.externals` as `new RegExp('^' + escapeRegExp(resolvedPath))`, without requiring a path separator or end-of-string boundary. Untrusted guest code can therefore require the allowlisted module (e.g. `foo`) and then require the absolute path of a non-allowlisted sibling whose path merely shares the resolved prefix (e.g. `.../node_modules/foo2/index.js`); the sibling passes `isPathAllowedForModule` and is loaded through `hostRequire`, so its top-level code runs in the host process before the exports are wrapped with `vm.readonly`, resulting in a sandbox escape and arbitrary code execution in the host context.
GHSA-c9wr-qm7p-p6vc
Primary source · Revision 1 · Withdrawn
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:GHSA-c9wr-qm7p-p6vc
vm2
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 3.12.2
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.12.2"
}
]
}
],
"package": {
"name": "vm2",
"purl": "pkg:npm/vm2",
"ecosystem": "npm"
},
"database_specific": {
"source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-c9wr-qm7p-p6vc/GHSA-c9wr-qm7p-p6vc.json"
}
}
]Publisher severity
critical
Source reference: /database_specific/severity
- Event
- #85919 · Revision 1
- Added to Heist Feed
- Publisher date