Description

Admidio is an open-source user management solution. Prior to version 5.0.9, an unauthenticated attacker can execute arbitrary JavaScript in any Admidio user's browser through a reflected XSS in system/msg_window.php. The endpoint passes user input through htmlspecialchars(), which does not encode square brackets. A subsequent call to Language::prepareTextPlaceholders() converts those brackets into HTML angle brackets, producing executable markup. This issue has been patched in version 5.0.9.

INFO

Published Date :

2026-05-07T02:59:34.649Z

Last Modified :

2026-05-07T14:58:41.314Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-41661 vulnerability.

Vendors Products
Admidio
  • Admidio
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-41661.

URL Resource
https://github.com/Admidio/admidio/releases/tag/v5.0.9 cve-icon cve-icon
https://github.com/Admidio/admidio/security/advisories/GHSA-gq27-fc8w-vcmp cve-icon cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact