GHSA-9v6c-vxr5-xp32MediumCVSS 4.3
Admidio before 5.0.17 contains an improper access control vulnerability that allows authenticated...
🔗 CVE IDs covered (1)
📋 Description
Admidio before 5.0.17 contains an improper access control vulnerability that allows authenticated members to register event guests by submitting the additional_guests field when guests are disallowed. Attackers can set additional_guests to the remaining seat count in modules/events/events_function.php to exhaust event capacity and block other members from registering.
🔗 References (9)
- https://github.com/Admidio/admidio/security/advisories/GHSA-92g9-59rr-c3qg
- https://nvd.nist.gov/vuln/detail/CVE-2026-117554
- https://github.com/Admidio/admidio/issues/2231
- https://github.com/Admidio/admidio/commit/5b0ee3585d2a69a6e85fee00b7b93f3ebc1e44d9
- https://github.com/Admidio/admidio
- https://github.com/Admidio/admidio/blob/v5.0.16/modules/events/events_function.php#L446-L462
- https://github.com/Admidio/admidio/releases/tag/v5.0.17
- https://www.vulncheck.com/advisories/admidio-before-5.0.17-event-guest-restriction-bypass-via-events-function-php
- https://github.com/advisories/GHSA-9v6c-vxr5-xp32