CVE-2026-73628: Improper Neutralization of Input During Web Page Generation

Serendipity versions = 2.3.5 and = 2.6.0 contain a reflected cross-site scripting vulnerability in the search clean-URL route /search/ . In include/functionsrouting.inc.php serveSearch, the sanitisation pipeline runs urldecode after HTML-encoding, so a single URL-encoded HTML payload survives...