Monstra CMS 3.0.4 has a Session Management Issue in the Users tab. A password change at users/1/edit does not invalidate a session that is open in a different browser.

Monstra CMS 3.0.4 has a Session Management Issue in the Administrations Tab. A password change at admin/index.php?id=users&action=edit&user_id=1 does not invalidate a session that is open in a different browser.

Monstra CMS 3.0.4 has XSS in the registration Form (i.e., the login parameter to users/registration).

plugins/box/pages/pages.admin.php in Monstra CMS 3.0.4 has a stored XSS vulnerability when an attacker has access to the editor role, and enters the payload in the title section of an admin/index.php?id=pages&action=edit_page&name=error404 (aka Edit 404 page) action.

Monstra CMS 3.0.4 has a stored XSS vulnerability when an attacker has access to the editor role, and enters the payload in the content section of a new page in the blog catalog.

Monstra CMS 3.0.4 has Stored XSS via the Name field on the Create New Page screen under the admin/index.php?id=pages URI, related to plugins/box/pages/pages.admin.php.

Monstra CMS 3.0.4 allows remote code execution via an upload_file request for a .zip file, which is automatically extracted and may contain .php files.

Monstra CMS 3.0.4 allows remote attackers to delete files via an admin/index.php?id=filesmanager&delete_dir=./&path=uploads/ request.

Monstra CMS through 3.0.4 has XSS in the title function in plugins/box/pages/pages.plugin.php via a page title to admin/index.php.

Monstra CMS through 3.0.4 has an incomplete "forbidden types" list that excludes .php (and similar) file extensions but not the .pht or .phar extension, which allows remote authenticated Admins or Editors to execute arbitrary PHP code by uploading a file, a different vulnerability than CVE-2017-18048.