GHSA-7c3p-84r8-h79q
Suggest an improvement- Source
- https://github.com/advisories/GHSA-7c3p-84r8-h79q
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-7c3p-84r8-h79q/GHSA-7c3p-84r8-h79q.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-7c3p-84r8-h79q
- Withdrawn
- 2026-10-01T15:36:33Z
- Published
- 2026-09-17T15:32:16Z
- Modified
- 2026-10-01T15:45:05Z
- Severity
-
- 8.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L CVSS Calculator
- 8.4 (High) CVSS_V4 - 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 CVSS Calculator
- Summary
- Duplicate Advisory: vm2: NodeVM builtin denylist bypass via fs/promises despite -fs, allowing host filesystem writes
- Details
-
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This advisory has been withdrawn because it is a duplicate of GHSA-6rh5-qq4q-97xh.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.
- Database specific
{ "cwe_ids": [ "CWE-269" ], "github_reviewed": true, "github_reviewed_at": "2026-10-01T15:36:33Z", "nvd_published_at": "2026-09-17T14:18:01Z", "severity": "HIGH" }- References
Affected packages
npm / vm2
Package
- Name
- vm2
- View open source insights on deps.dev
- Purl
- pkg:npm/vm2