GHSA-8whx-v8qq-pq64: changedetection.io has Reflected XSS in its RSS Tag Error Response

changedetection.io versions up to 0.54.1 have a reflected XSS (cross-site scripting, where an attacker injects malicious code into a web page) vulnerability in the `/rss/tag/` endpoint. The vulnerability occurs because user input from the URL is directly inserted into the HTML response without escaping (removing special characters that could be interpreted as code), allowing attackers to inject and execute JavaScript in victims' browsers if they click a malicious link.