CVE-2026-117554 — Vulnerability intelligence
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Published:
- CVSS
- 5.3
- CISA KEV
- Not listed; not proof of no exploitation
Original source text (not a translation)
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.