Redaxo CMS Mediapool Addon 5.5.1 Arbitrary File Upload

Redaxo CMS Mediapool Addon 5.5.1 and older contains an arbitrary file upload vulnerability that allows authenticated users to bypass file extension blacklist restrictions. Attackers with editor accounts can upload executable files by using obfuscated extensions like php71 or php53 to evade the blacklist filter and execute arbitrary code.

Redaxo CMS 5.2 Cross-Site Request Forgery via users endpoint

Redaxo CMS 5.2 contains a cross-site request forgery vulnerability that allows unauthenticated attackers to create administrative user accounts by tricking authenticated administrators into visiting malicious pages. Attackers can craft HTML forms targeting the users endpoint with hidden fields containing admin credentials and account parameters to add new administrator accounts without user consent.

A Remote Code Execution (RCE) vulnerability in the template management component in REDAXO CMS 5.20.0 allows remote authenticated administrators to execute arbitrary operating system commands by injecting PHP code into an active template. The payload is executed when visitors access frontend pages using the compromised template.

A stored cross-site scripting (XSS) vulnerability in the module management component in REDAXO CMS 5.20.0 allows remote users to inject arbitrary web script or HTML via the Output code field in modules. The payload is executed when a user views or edits an article by adding slice that uses the compromised module.

An issue was discovered in REDAXO CMS 4.7.2. There is a CSRF vulnerability that can add an administrator account via index.php?page=user.