CVE-2026-47141 — vm2: NodeVM observability builtins leak host process and HTTP request data
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…
Published: 2026-06-12 · CVSS: 6.9 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7