CVE-2026-41657

Admidio is an open-source user management solution. Prior to version 5.0.9, the contactsdata.php endpoint uses a weaker permission check isAdministratorUsers, requiring only roledituser=true than the frontend UI contacts.php which correctly requires the stronger isAdministrator requiring...

CVE-2026-41657 Admidio: Cross-Organization Member Data Exposure via Permission Check Mismatch in contacts_data.php

Admidio is an open-source user management solution. Prior to version 5.0.9, the contactsdata.php endpoint uses a weaker permission check isAdministratorUsers, requiring only roledituser=true than the frontend UI contacts.php which correctly requires the stronger isAdministrator requiring...

Admidio security vulnerabilities

Admidio is a set of open-source member management systems developed by the Admidio team. This system supports features such as member lists, event management, message boards, photo albums, and downloads. Versions of Admidio prior to 5.0.9 contained security vulnerabilities. These vulnerabilities...