Filtering Node.js builtin modules by ignoring 'internal/' does not sufficiently block all internal modules. Undocumented underscored modules like `_http_client` and `_http_server` bypass this filter and expose low-level network primitives. To securely restrict builtins, ensure underscored modules are also excluded (e.g., `!s.startsWith('_')`).
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CVE-2026-47139: Bypass Node Internal Modules Filtercve-2026-47139-bypass-node-internal-modules-filter
CVE-2026-47139: Node Builtin Modules Underscore Bypasscve-2026-47139-node-builtin-modules-underscore-bypass
Filtering Node.js builtin modules without excluding undocumented underscored modules (e.g., `_http_client`, `_http_server`) can allow sandbox bypasses. Underscored modules expose underlying network or system primitives directly and often circumvent restrictions placed on public modules. Ensure that elements starting with `_` are also filtered out.
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