CVE-2026-30927 (GCVE-0-2026-30927)
Vulnerability from cvelistv5
Published
2026-03-09 23:03
Modified
2026-03-10 13:59
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Summary
Admidio is an open-source user management solution. Prior to 5.0.6, in modules/events/events_function.php, the event participation logic allows any user who can participate in an event to register OTHER users by manipulating the user_uuid GET parameter. The condition uses || (OR), meaning if possibleToParticipate() returns true (event is open for participation), ANY user - not just leaders - can specify a different user_uuid and register/cancel participation for that user. The code then operates on $user->getValue('usr_id') (the target user from user_uuid) rather than the current user. This vulnerability is fixed in 5.0.6.
Impacted products
Vendor Product Version
Admidio admidio Version: < 5.0.6
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Show details on NVD website


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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