Admidio is an open-source user management solution. Prior to version 4.3.12, an unsafe deserialization vulnerability allows any unauthenticated user to execute arbitrary code on the server. Version 4.3.12 fixes this issue.

Admidio is a free, open source user management system for websites of organizations and groups. In Admidio before version 4.3.10, there is a Remote Code Execution Vulnerability in the Message module of the Admidio Application, where it is possible to upload a PHP file in the attachment. The uploaded file can be accessed publicly through the URL `{admidio_base_url}/adm_my_files/messages_attachments/{file_name}`. The vulnerability is caused due to the lack of file extension verification, allowing malicious files to be uploaded to the server and public availability of the uploaded file. This vulnerability is fixed in 4.3.10.

Admidio is a free, open source user management system for websites of organizations and groups. In Admidio before version 4.3.9, there is an SQL Injection in the `/adm_program/modules/ecards/ecard_send.php` source file of the Admidio Application. The SQL Injection results in a compromise of the application's database. The value of `ecard_recipients `POST parameter is being directly concatenated with the SQL query in the source code causing the SQL Injection. The SQL Injection can be exploited by a member user, using blind condition-based, time-based, and Out of band interaction SQL Injection payloads. This vulnerability is fixed in 4.3.9.

Admidio v4.2.12 and below is vulnerable to Cross Site Scripting (XSS).

Insufficient Session Expiration in GitHub repository admidio/admidio prior to 4.2.11.

Unrestricted Upload of File with Dangerous Type in GitHub repository admidio/admidio prior to 4.2.10.

Improper Access Control in GitHub repository admidio/admidio prior to 4.2.9.

Improper Access Control in GitHub repository admidio/admidio prior to 4.2.9.

Improper Neutralization of Formula Elements in a CSV File in GitHub repository admidio/admidio prior to 4.2.9.

Cross-site Scripting (XSS) - Stored in GitHub repository admidio/admidio prior to 4.2.8.