MEDIUM 5.3 NVD
CVE-2026-73628
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/fun
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.
References
- https://github.com/s9y/Serendipity/security/advisories/GHSA-6c2x-mjmq-vx4q
- https://www.vulncheck.com/advisories/serendipity-reflected-xss-via-search-clean-url-route
This medium severity vulnerability with a CVSS score of 5.3 was published on 2026-08-13 via NVD.
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