Admidio up to 4.3.17/5.0.14 Redirect system/redirect.php url cross site scripting

Summaryinfo

A vulnerability classified as problematic was found in Admidio up to 4.3.17/5.0.14. This issue affects some unknown processing of the file system/redirect.php of the component Redirect. The manipulation of the argument url results in cross site scripting. This vulnerability is reported as CVE-2026-109327. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Admidio up to 4.3.17/5.0.14. It has been classified as problematic. Affected is an unknown function of the file system/redirect.php of the component Redirect. The manipulation of the argument url with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity. CVE summarizes:

Admidio 4.0.12 through 4.3.17 and 5.0.0 before 5.0.15 contains a reflected cross-site scripting vulnerability in system/redirect.php that allows unauthenticated attackers to inject JavaScript via the url GET parameter, due to an incomplete fix for CVE-2021-43810. Attackers can craft a javascript: URL containing a decoy http:// segment that passes validation and executes script in the Admidio origin when victims click the redirect link.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-109327 since 10/12/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

By approaching the search of inurl:system/redirect.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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