vm2 contains a sandbox escape vulnerability

{
  "id": "816a8c46be66f6db2307150c5e217c9e9cfe5347c8d18e2af9639fd6edad4c5e",
  "url": "https://osv.dev/vulnerability/GHSA-pq68-rvw4-xp4r",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "vm2 contains a sandbox escape vulnerability",
    "summary": "vm2 NodeVM versions before 3.12.1 contain a sandbox escape vulnerability where the DANGEROUS_BUILTINS denylist omits child_process despite blocking other host-spawning modules. Attackers can require child_process and execute arbitrary commands on the host system when NodeVM is configured with builtin:['*'] or explicit child_process allowance. This fork hardens `NodeVM` with a `DANGEROUS_BUILTINS` denylist that blocks host‑code‑reaching core modules **even when the sandbox requests `builtin:['*']` or names them explicitly** — the list contains `module`, `worker_threads`, `cluster`, `vm`, `repl`, `inspector`, `process`, `trace_events`, `wasi`, `diagnostics_channel`, `async_hooks`, `perf_hooks`, `v8`, `os`, `dns`, and `test`. It **omits `child_process`** — the single most direct command‑execution primitive. As a result, a sandbox running under `require:{builtin:['*']}` (or the fork's own documented `['*','-http','-net',…]` subtract pattern) can `require('child_process').execSync(...)` and execute arbitrary commands on the host. The omission is internally inconsistent: `cluster` is denied with the explicit rationale \"`cluster.fork()` spawns a host child process running attacker‑controlled code,\" yet `child_process` — which spawns host processes more directly — is not. ### Details `lib/builtin.js`: - `DANGEROUS_BUILTINS` (lines **83‑179**) — the Set of denied builtins. `child_process` does not appear anywhere in it. - `isDangerousBuiltin(key)` (lines **185‑195**) — strips `node:` ",
    "evidence": "osv:GHSA-pq68-rvw4-xp4r",
    "products": [
      {
        "name": {
          "value": "vm2",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.12.1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "GHSA-pq68-rvw4-xp4r",
      "aliases": [
        "CVE-2026-93605",
        "GHSA-pq68-rvw4-xp4r"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.12.1"
                }
              ]
            }
          ],
          "package": {
            "name": "vm2",
            "purl": "pkg:npm/vm2",
            "ecosystem": "npm"
          },
          "database_specific": {
            "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-pq68-rvw4-xp4r/GHSA-pq68-rvw4-xp4r.json",
            "last_known_affected_version_range": "<= 3.12.0"
          }
        }
      ],
      "modified": "2026-10-07T18:15:11.862790830Z",
      "provider": "osv",
      "references": [
        "https://github.com/patriksimek/vm2/security/advisories/GHSA-pq68-rvw4-xp4r",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-93605",
        "https://github.com/patriksimek/vm2",
        "https://www.vulncheck.com/advisories/vm2-nodevm-before-3.12.1-remote-code-execution-via-child-process"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-693",
          "CWE-913"
        ],
        "severity": "CRITICAL",
        "github_reviewed": true,
        "nvd_published_at": null,
        "github_reviewed_at": "2026-10-07T18:05:00Z"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-93605",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 97159,
  "published_at": "2026-10-07T18:05:00+00:00"
}