CVEvulnerability
CVE-2026-117554
5.3 MEDIUM
Official page ↗
- Status
- Deferred
- Published
- 2026-10-27
- Last modified
- 2026-10-27
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 5.3 MEDIUM — CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 4.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Weaknesses
- CWE-602
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.
Related
Weakness · CWE (1)
- CWE-602 Client-Side Enforcement of Server-Side Security weakness
References
- https://github.com/Admidio/admidio github.com
- https://github.com/Admidio/admidio/blob/v5.0.16/modules/events/events_function.php#L446-L462 github.com
- https://github.com/Admidio/admidio/commit/5b0ee3585d2a69a6e85fee00b7b93f3ebc1e44d9 github.com
- https://github.com/Admidio/admidio/issues/2231 github.com
- https://github.com/Admidio/admidio/releases/tag/v5.0.17 github.com
- https://github.com/Admidio/admidio/security/advisories/GHSA-92g9-59rr-c3qg github.com
- https://www.vulncheck.com/advisories/admidio-before-5.0.17-event-guest-restriction-bypass-via-events-function-php www.vulncheck.com