Hanno Böck has reported a vulnerability in Serendipity, which can be exploited by malicious people to conduct script insertion attacks.

Input passed via the "Referer" HTTP header is not properly sanitised before being saved. This can be exploited to insert arbitrary HTML and script code, which is executed in a user's browser session in context of an affected site when the malicious data is viewed via the Top Referrers plugin.

Successful exploitation requires that the Top Referrers plugin is enabled.

The vulnerability is reported in versions prior to 1.3.1.

Solution
Update to version 1.3.1.

Provided and/or discovered by
Hanno Böck

Changelog
Further details available to Secunia VIM customers

Original Advisory
Serendipity:
http://blog.s9y.org/archives/193-Serendipity-1.3.1-released.html

Hanno Böck:
http://int21.de/cve/CVE-2008-1385-s9y.html

Deep Links
Links available to Secunia VIM customers