Multiple SQL injection vulnerabilities in TestLink before 1.8.5 allow remote authenticated users to execute arbitrary SQL commands via (1) the Test Case ID field to lib/general/navBar.php or (2) the logLevel parameter to lib/events/eventviewer.php.
http://www.teamst.org/index.php?option=com_content&task=view&id=84&Itemid=2
http://archives.neohapsis.com/archives/fulldisclosure/2009-12/0221.html