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java-topology/defects/phoenix/patch/CLEAN.md
russell@unturf.com 4d4c256673 diamond-scan: cpython/django O(2^D) hierarchy traversal; flask/rails/ruby/phoenix CLEAN 
cpython-0001: pydoc.allmethods unconditional __bases__ recursion, no visited guard
cpython-0002: turtle.__methodDict unconditional __bases__ recursion, fires at import
cpython-0003: idlelib.rpc._getmethods unconditional __bases__ recursion, IDLE debug path
django-0006: migrations.state.flatten_bases abstract model diamond traversal (comment in source acknowledges duplicates)
flask/rails/ruby/phoenix: CLEAN
2026-03-29 20:16:12 -04:00

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Phoenix — CWE-407 Diamond Traversal Scan: CLEAN

Scanned: 2026-03-30

Files examined

  • lib/phoenix/router.ex — plug pipeline compilation uses Elixir macros; no recursive module hierarchy traversal
  • lib/phoenix/endpoint.ex — module configuration, no class hierarchy traversal
  • lib/phoenix/channel.ex — no recursive module traversal

Result

No diamond recursion defects found. Elixir's module system is flat — modules do not have a mutable inheritance hierarchy that can form diamonds. use Phoenix.Router and related macros expand at compile time into a flat list of plugs. No recursive ancestors/__bases__ pattern exists in Elixir/Phoenix.