From 3bb85d9935fc9c6d452973e7bb006016e35286c3 Mon Sep 17 00:00:00 2001
From: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Date: Thu, 26 Mar 2026 09:13:27 +0000
Subject: [PATCH] fix: resolve CodeQL alert #48 - Reflected server-side
 cross-site scripting

---
 vulnerable_xss.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/vulnerable_xss.py b/vulnerable_xss.py
index 59b8652..00705a9 100644
--- a/vulnerable_xss.py
+++ b/vulnerable_xss.py
@@ -49,7 +49,8 @@ def profile():
 
 @app.route('/error')
 def error_page():
-    error_msg = request.args.get('msg')
+    from markupsafe import escape
+    error_msg = escape(request.args.get('msg', ''))
     
     return f"<div class='error'>{error_msg}</div>"