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506155b4f4
Addresses #4865 - The native Python xml library is vulnerable to XML External Entity (XXE) attacks that can leak confidential data and XML bombs that can cause denial of service. Changes: - Replace xml.etree.ElementTree with defusedxml.ElementTree in xml_loader.py - Replace xml.etree.ElementTree with defusedxml.ElementTree in arxiv_paper_tool.py - Add defusedxml~=0.7.1 as a dependency in crewai-tools pyproject.toml - Update arxiv_paper_tool_test.py to use defusedxml - Replace WebPageLoader tests in test_xml_loader.py with proper XMLLoader tests - Add XXE attack tests (entity expansion, billion laughs, parameter entities) - Remove noqa: S314 comments since defusedxml is safe Co-Authored-By: João <joao@crewai.com>