Admidio up to 4.3.17/5.0.14 members_assignment.php access control

Summaryinfo

A vulnerability was found in Admidio up to 4.3.17/5.0.14. It has been classified as problematic. This vulnerability affects unknown code of the file members_assignment.php. This manipulation causes access control. The identification of this vulnerability is CVE-2026-109329. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic was found in Admidio up to 4.3.17/5.0.14. Affected by this vulnerability is an unknown code block of the file members_assignment.php. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Admidio 4.3.2 through 4.3.17 and 5.0.0 before 5.0.15 contains a broken access control vulnerability that allows role administrators to assign users to roles in other organizations. Attackers can submit crafted assign requests to members_assignment.php with a foreign role UUID to gain privileged membership, log into that organization, and edit its user profiles.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-109329 since 10/12/2026. The exploitation appears to be easy. The attack can be launched remotely. Additional levels of successful authentication are needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

By approaching the search of inurl:members_assignment.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

• 4.3.0
• 4.3.1
• 4.3.2
• 4.3.3
• 4.3.4
• 4.3.5
• 4.3.6
• 4.3.7
• 4.3.8
• 4.3.9
• 4.3.10
• 4.3.11
• 4.3.12
• 4.3.13
• 4.3.14
• 4.3.15
• 4.3.16
• 4.3.17
• 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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