Monstra 3.0.4 does not filter the case of php, which leads to an unrestricted file upload vulnerability.

A remote code execution (RCE) vulnerability in the component /admin/index.php?id=themes&action=edit_template&filename=blog of Monstra v3.0.4 allows attackers to execute arbitrary commands via a crafted PHP file.

A local file inclusion vulnerability was discovered in the captcha function in Monstra 3.0.4 which allows remote attackers to execute arbitrary PHP code.

Monstra CMS 3.0.4 allows remote authenticated users to upload and execute arbitrary PHP code via admin/index.php?id=filesmanager because, for example, .php filenames are blocked but .php7 filenames are not, a related issue to CVE-2017-18048.

Monstra CMS through 3.0.4 allows remote authenticated users to take over arbitrary user accounts via a modified login parameter to an edit URI, as demonstrated by login=victim to the users/21/edit URI.

Monstra CMS 3.0.4 allows remote attackers to execute arbitrary PHP code via a mixed-case file extension, as demonstrated by the 123.PhP filename, because plugins\box\filesmanager\filesmanager.admin.php mishandles the forbidden_types variable.

admin/index.php?id=filesmanager in Monstra CMS 3.0.4 allows remote authenticated administrators to trigger stored XSS via JavaScript content in a file whose name lacks an extension. Such a file is interpreted as text/html in certain cases.

admin/index.php in Monstra CMS 3.0.4 allows arbitrary directory listing via id=filesmanager&path=uploads/.......//./.......//./ requests.

admin/index.php in Monstra CMS 3.0.4 allows arbitrary file deletion via id=filesmanager&path=uploads/.......//./.......//./&delete_file= requests.

admin/index.php in Monstra CMS 3.0.4 allows XSS via the page_meta_title parameter in an edit_page&name=error404 action, a different vulnerability than CVE-2018-10121.

admin/index.php in Monstra CMS 3.0.4 allows XSS via the page_meta_title parameter in an edit_page action for a page with no special role.

admin/index.php in Monstra CMS 3.0.4 allows XSS via the page_meta_title parameter in an add_page action.

Monstra CMS V3.0.4 allows HTTP header injection in the plugins/captcha/crypt/cryptographp.php cfg parameter, a related issue to CVE-2012-2943.

Monstra CMS V3.0.4 has XSS when ones tries to register an account with a crafted password parameter to users/registration, a different vulnerability than CVE-2018-11473.

Monstra CMS V3.0.4 has an information leakage risk (e.g., PATH, DOCUMENT_ROOT, and SERVER_ADMIN) in libraries/Gelato/ErrorHandler/Resources/Views/Errors/exception.php.

In Monstra CMS 3.0.4, an attacker with 'Editor' privileges can change the password of the administrator via an admin/index.php?id=users&action=edit&user_id=1, Insecure Direct Object Reference (IDOR).

Monstra CMS 3.0.4 does not properly restrict modified Snippet content, as demonstrated by the admin/index.php?id=snippets&action=edit_snippet&filename=google-analytics URI, which allows attackers to execute arbitrary PHP code by placing this code after a <?php substring.

Multiple cross-site scripting (XSS) vulnerabilities in Monstra CMS 3.0.4 allow remote attackers to inject arbitrary web script or HTML via the (1) first name or (2) last name field in the edit profile page.

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.