admidio up to 5.0.6 File UploadHandlerFile.php unrestricted upload

Summaryinfo

A vulnerability was found in admidio up to 5.0.6. It has been rated as critical. The impacted element is an unknown function of the file UploadHandlerFile.php of the component File Module. Performing a manipulation results in unrestricted upload. This vulnerability is reported as CVE-2026-32756. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in admidio up to 5.0.6. It has been classified as critical. This affects an unknown function of the file UploadHandlerFile.php of the component File Module. The manipulation with an unknown input leads to a unrestricted upload vulnerability. CWE is classifying the issue as CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Admidio is an open-source user management solution. Versions 5.0.6 and below contain a critical unrestricted file upload vulnerability in the Documents & Files module. Due to a design flaw in how CSRF token validation and file extension verification interact within UploadHandlerFile.php, an authenticated user with upload permissions can bypass file extension restrictions by intentionally submitting an invalid CSRF token. This allows the upload of arbitrary file types, including PHP scripts, which may lead to Remote Code Execution on the server, resulting in full server compromise, data exfiltration, and lateral movement. This issue has been fixed in version 5.0.7.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-32756 since 03/13/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1608.002 for this issue.

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

Upgrading to version 5.0.7 eliminates this vulnerability. The upgrade is hosted for download at github.com.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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

Website

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

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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