general/login.php in phpCollab 2.5 rc3 and earlier allows remote attackers to execute arbitrary commands via shell metacharacters in unspecified input related to the SSL_CLIENT_CERT environment variable. NOTE: in some environments, SSL_CLIENT_CERT always has a base64-encoded string value, which may impose constraints on injection for typical shells.

SQL injection vulnerability in general/sendpassword.php in (1) PHPCollab 2.4 and 2.5.rc3, and (2) NetOffice 2.5.3-pl1 and 2.6.0b2 allows remote attackers to execute arbitrary SQL commands via the loginForm parameter in the "forgotten password" option.

SQL injection vulnerability in phpCollab 2.5.1 and earlier allows remote attackers to execute arbitrary SQL commands via the id parameter to newsdesk/newsdesk.php.

SQL injection vulnerability in PhpCollab 2.5.1 and earlier allows remote attackers to execute arbitrary SQL commands via the (1) project or id parameters to topics/deletetopics.php; the (2) id parameter to bookmarks/deletebookmarks.php; or the (3) id parameter to calendar/deletecalendar.php.

Unrestricted file upload vulnerability in clients/editclient.php in PhpCollab 2.5.1 and earlier allows remote authenticated users to execute arbitrary code by uploading a file with an executable extension, then accessing it via a direct request to the file in logos_clients/.