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[Security] Fix CodeQL alert #46: Reflected server-side cross-site scripting#104

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security/codeql-46-xss-search
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[Security] Fix CodeQL alert #46: Reflected server-side cross-site scripting#104
colin-d-fried wants to merge 1 commit into
mainfrom
security/codeql-46-xss-search

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@colin-d-fried colin-d-fried commented Mar 26, 2026

Summary

Fixes CodeQL alert #46: Reflected server-side cross-site scripting

Field Value
Severity medium
File vulnerable_xss.py
CWE CWE-079
Alert CodeQL Alert #46

Fix Applied

See the diff for the specific secure coding change applied.

Fixes #48


Note

Low Risk
Low risk: small, localized change to the /search endpoint that only affects how the q parameter is rendered and should primarily reduce XSS exposure.

Overview
Mitigates reflected XSS in vulnerable_xss.py by HTML-escaping the /search query parameter (q) before inserting it into the response.

Simplifies the /search response generation by returning the escaped string directly instead of rendering via render_template_string.

Written by Cursor Bugbot for commit 0a864c1. This will update automatically on new commits. Configure here.

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✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 2 additional findings.

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[CodeQL #46] Reflected server-side cross-site scripting

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