CVE-2026-73628 | BDVDB-2026-359140 Detail

Description#

Serendipity versions >= 2.3.5 and <= 2.6.0 contain a reflected cross-site scripting vulnerability in the search clean-URL route (/search/<term>). In include/functions_routing.inc.php serveSearch(), the sanitisation pipeline runs urldecode() after HTML-encoding, so a single URL-encoded HTML payload survives strip_tags() and htmlspecialchars() and is then decoded back into live HTML in the page. A crafted search link can execute arbitrary JavaScript in the victim's browser. Fixed in 2.6.1.

Impact#

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Exploit#

History#

1. Version 12026-08-13Record published in the CVE List.
2. Version 22026-09-30Most recent update recorded in the CVE List.