InoutMailingListManager 3.1 and earlier allows remote attackers to access certain restricted functionality, and upload and execute arbitrary PHP code, by setting an arbitrary admin cookie.

InoutMailingListManager 3.1 and earlier sends a Location redirect header but does not exit after an authorization check fails, which allows remote attackers to access certain restricted functionality, and upload and execute arbitrary PHP code, by ignoring the redirect.

Multiple SQL injection vulnerabilities in InoutMailingListManager 3.1 and earlier allow remote attackers to execute arbitrary SQL commands via the id parameter to changename.php and other unspecified vectors.