Admidio up to 5.0.14 Registration Presenter RegistrationPresenter.php FIRST_NAME cross site scripting

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Admidio up to 5.0.14. Impacted is an unknown function of the file RegistrationPresenter.php of the component Registration Presenter. This manipulation of the argument FIRST_NAME causes cross site scripting. This vulnerability appears as CVE-2026-109328. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Admidio up to 5.0.14. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file RegistrationPresenter.php of the component Registration Presenter. The manipulation of the argument FIRST_NAME with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

Admidio 5.0.0 before 5.0.15 contains an unauthenticated stored cross-site scripting vulnerability in RegistrationPresenter.php, which inserts the raw FIRST_NAME registration value into an unencoded data-message attribute. Attackers can register with a double-quoted event handler that executes JavaScript in an administrator's session when they hover the entry on the Manage registrations page.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-109328 since 10/12/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

By approaching the search of inurl:RegistrationPresenter.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 5.0.15 eliminates this vulnerability.

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Productinfo

Name

• Admidio

Version

• 5.0.0
• 5.0.1
• 5.0.2
• 5.0.3
• 5.0.4
• 5.0.5
• 5.0.6
• 5.0.7
• 5.0.8
• 5.0.9
• 5.0.10
• 5.0.11
• 5.0.12
• 5.0.13
• 5.0.14

Website

• Product: https://github.com/Admidio/admidio/

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