CMSsite 1.0 contains an SQL injection vulnerability that allows unauthenticated attackers to manipulate database queries by injecting SQL code through the 'post' parameter. Attackers can send GET requests to post.php with malicious 'post' values to extract sensitive database information or perform time-based blind SQL injection attacks.

CMSsite 1.0 contains a cross-site request forgery vulnerability that allows attackers to perform unauthorized administrative actions by crafting malicious HTML forms. Attackers can trick authenticated administrators into visiting crafted pages that submit POST requests to the users.php endpoint with parameters like source=add_user, source=edit_user, or del=1 to create, modify, or delete admin accounts.