[Security] Fix CodeQL alert #32: XML internal entity expansion#100
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colin-d-fried wants to merge 1 commit into
Open
[Security] Fix CodeQL alert #32: XML internal entity expansion#100colin-d-fried wants to merge 1 commit into
colin-d-fried wants to merge 1 commit into
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| @@ -1,4 +1,4 @@ | |||
| import xml.etree.ElementTree as ET | |||
| import defusedxml.ElementTree as ET | |||
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New dependency defusedxml missing from project dependencies
High Severity
The import was changed to defusedxml.ElementTree but defusedxml is not declared in Pipfile or Pipfile.lock (and no requirements.txt exists). This means the application will crash at startup with an ImportError, and the intended XXE security fix will not actually be deployed. The security vulnerability remains exploitable because the fix cannot run.
This was referenced Mar 26, 2026
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Summary
Fixes CodeQL alert #32: XML internal entity expansion
vulnerable_xxe.pyFix Applied
See the diff for the specific secure coding change applied.
Fixes #34
Note
Low Risk
Low code-change risk (single import swap), but it changes XML parsing behavior to safely reject/limit entity expansion which could affect any inputs relying on nonstandard entities.
Overview
Mitigates the CodeQL-reported XML internal entity expansion issue by switching
vulnerable_xxe.pyfrom the stdlibxml.etree.ElementTreetodefusedxml.ElementTreeforET.fromstring/ET.parseusage, ensuring XML parsing is performed with hardened defaults against entity-expansion attacks.Written by Cursor Bugbot for commit cdbd3f7. This will update automatically on new commits. Configure here.