Cross-site scripting (XSS) vulnerability in Comment.php in Serendipity 0.7 beta1, and possibly other versions before 0.7-beta3, allows remote attackers to inject arbitrary HTML and PHP code via the (1) email or (2) username field.
https://exchange.xforce.ibmcloud.com/vulnerabilities/17536
https://euvd.enisa.europa.eu/vulnerability/EUVD-2004-2149
http://www.securityfocus.com/bid/11269
http://securitytracker.com/id?1011448
http://secunia.com/advisories/12673/
http://lists.grok.org.uk/pipermail/full-disclosure/2004-September/026955.html