medium6.9
CVE-2026-47141
NodeVM observability builtins leak host process and HTTP request data
Impact
vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, NodeVM exposes some process-wide observability builtins when they are allowed through require.builtin. The diagnostics_channel, async_hooks, and perf_hooks builtins are not blocked by the dangerous builtin denylist. These modules are process-wide, not sandbox-local. Sandboxed code can use them to observe host application data across the vm2 boundary. This issue has been patched in version 3.11.4.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | vm2 | <= 3.11.3 | 3.11.4 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-9g8x-92q2-p28f
- https://github.com/patriksimek/vm2/security/advisories/GHSA-9g8x-92q2-p28f
- https://github.com/patriksimek/vm2/commit/e1c48fce05189f48e71efbd32af0754efa4066bb
- https://github.com/patriksimek/vm2/releases/tag/v3.11.4
- https://nvd.nist.gov/vuln/detail/CVE-2026-47141