CVE-2026-47140: NodeVM builtin denylist bypass via process and inspector/promises allows host code execution

May 29, 2026 (updated June 12, 2026)

NodeVM blocks several dangerous Node.js builtins such as module, worker_threads, cluster, vm, repl, and inspector.

However, the denylist misses process and inspector/promises. Both can be used from sandboxed code to reach host-side execution primitives.

This allows sandboxed code to bypass the intended builtin restrictions and execute code in the host process.

References

github.com/advisories/GHSA-rp36-8xq3-r6c4
github.com/patriksimek/vm2/commit/a1ed47a98d1cc36cb48c0d566d55889688e0b59b
github.com/patriksimek/vm2/releases/tag/v3.11.4
github.com/patriksimek/vm2/security/advisories/GHSA-rp36-8xq3-r6c4
nvd.nist.gov/vuln/detail/CVE-2026-47140

Code Behaviors & Features

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