MyBlog 0.9.8 and earlier allows remote attackers to bypass authentication requirements via the admin cookie parameter to certain admin files, as demonstrated by admin/settings.php.

Direct static code injection vulnerability in admin/settings.php in MyBlog 0.9.8 and earlier allows remote authenticated admin users to inject arbitrary PHP code via the content parameter, which can be executed by accessing index.php. NOTE: a separate vulnerability could be leveraged to make this issue exploitable by remote unauthenticated attackers.

Multiple cross-site scripting (XSS) vulnerabilities in MyBlog allow remote attackers to inject arbitrary web script or HTML via the (1) s and (2) sort parameters to index.php, and the (3) id parameter to post.php.

Multiple SQL injection vulnerabilities in MyBlog allow remote attackers to execute arbitrary SQL commands via the (1) view parameter to (a) index.php, and the (2) id parameter to (b) member.php and (c) post.php.

add.php in MyBlog 0.9.8 and earlier allows remote attackers to bypass authentication and gain administrative access by setting a cookie with admin=yes and login=admin.

Sam Crew MyBlog stores passwords in cleartext in a MySQL database, which allows context-dependent attackers to obtain sensitive information.