s9y Serendipity up to 2.6.0 functions_routing.inc.php serveSearch cross site scripting

Summaryinfo

A vulnerability was found in s9y Serendipity and classified as problematic. Affected by this vulnerability is the function serveSearch of the file include/functions_routing.inc.php. The manipulation results in cross site scripting. This vulnerability is known as CVE-2026-73628. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in s9y Serendipity. It has been classified as problematic. Affected is the function serveSearch of the file include/functions_routing.inc.php. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-73628 since 08/13/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

By approaching the search of inurl:include/functions_routing.inc.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 2.6.1 eliminates this vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Content Management System

Vendor

• s9y

Name

• Serendipity

Version

• 0.3
• 0.4
• 0.5
• 0.5 Pl1
• 0.5_pl1
• 0.6
• 0.6 Pl1
• 0.6 Pl2
• 0.6 Pl3
• 0.6 Rc1
• 0.6 Rc2
• 0.7
• 0.7 Beta1
• 0.7 Beta2
• 0.7 Beta3
• 0.7 Beta4
• 0.7 Rc1
• 0.7.1
• 0.7rc1
• 0.8
• 0.8 Beta5
• 0.8 Beta 5
• 0.8 Beta6
• 0.8 Beta 6
• 0.8 Beta 6 Snapshot
• 0.8.1
• 0.8.2
• 0.8.3
• 0.8.4
• 0.8.5
• 0.9
• 0.9.1
• 1.0
• 1.0 Beta1
• 1.0 Beta2
• 1.0 Beta3
• 1.0-beta3
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.1
• 1.1.1
• 1.1.2
• 1.1.3
• 1.1.4
• 1.2
• 1.2 Beta5
• 1.2.1
• 1.3
• 1.3.1
• 1.4.1
• 1.5
• 1.5.1
• 1.5.2
• 1.5.3
• 1.5.4
• 1.5.5
• 1.6
• 1.6.1
• 1.6.2
• 1.7
• 1.7.2
• 2.0
• 2.4.0
• 2.6.0

License

• free

Website

• Product: https://github.com/s9y/Serendipity/

CPE 2.3info

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CPE 2.2info

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