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