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Eli Peter 2026-06-05 10:16:30 -05:00 committed by GitHub
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"""Phase 05 (Track J.3) — Python XXE vuln fixture.
The function pulls XML bytes off the request and feeds them straight
to `lxml.etree.XMLParser(resolve_entities=True)`, so any
`<!ENTITY xxe SYSTEM "file:///…">` in the payload is resolved and its
body substituted into the parsed tree.
"""
from lxml import etree
def run(body: bytes):
parser = etree.XMLParser(resolve_entities=True)
return etree.fromstring(body, parser=parser)