Duplicate Advisory: vm2: NodeVM builtin denylist bypass via fs/promises despite -fs, allowing host filesystem writes
## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-6rh5-qq4q-97xh. This link is maintained to preserve external references. ## Original 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.
GHSA-7c3p-84r8-h79q
Primary source · Revision 1 · Withdrawn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-7c3p-84r8-h79q
vm2
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- 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"
},
{
"last_affected": "3.11.6"
}
]
}
],
"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-7c3p-84r8-h79q/GHSA-7c3p-84r8-h79q.json"
}
}
]Publisher severity
high
Source reference: /database_specific/severity
- Event
- #61256 · Revision 1
- Added to Heist Feed
- Publisher date