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Detect Path Traversal in JSON

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Your question is Detect Path Traversal in JSON. Start with the requirements on the right.

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Problem

Given a JSON-like Python object representing a nested directory tree, write a function that returns all suspicious file or directory paths that may indicate path traversal. The input may contain nested dictionaries and lists. A node can include name, path, and children fields, and a path is suspicious if its normalized form attempts to escape the root using segments like ...

Constraints

  • The input contains at most 10^5 total nested nodes.
  • Each path value, when present, is a string of length between 0 and 10^4.
  • Only /, ., and .. need to be interpreted specially during normalization.
  • The solution should inspect arbitrarily nested dictionaries and lists.

Function Signature

def find_path_traversal(payload):
Your solutionPython 3
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