CVE-2026-109327
Received Received - Intake

Reflected XSS in Admidio via crafted javascript: URL

Publication date: 2026-10-12

Last updated on: 2026-10-12

Assigner: VulnCheck

Description
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.

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Meta Information

Published
2026-10-12
Last Modified
2026-10-12
Generated
2026-10-12
AI Q&A
2026-10-12
EPSS Evaluated
N/A
NVD
CVE-2026-109327
EUVD
EUVD-2026-97629

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
Admidio admidio 4.0.12
Admidio admidio 5.0.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
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.

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Executive Summary

This vulnerability is a reflected cross-site scripting (XSS) issue in Admidio versions 4.0.12 through 4.3.17 and 5.0.0 before 5.0.15. It exists in system/redirect.php due to an incomplete fix for CVE-2021-43810. Attackers can inject JavaScript via the url GET parameter by crafting a javascript: URL with a fake http:// segment. When victims click the link, the script executes in the Admidio origin.

Detection Guidance

Check for suspicious GET requests to system/redirect.php with a url parameter containing javascript: or http:// followed by malicious script. Inspect server logs for unusual redirects or injected JavaScript in responses.

Impact Analysis

This vulnerability allows unauthenticated attackers to execute arbitrary JavaScript in the context of the Admidio application when users click a malicious link. This could lead to session hijacking, theft of sensitive data, or unauthorized actions performed on behalf of the user.

Compliance Impact

This vulnerability could lead to unauthorized access to personal data, violating GDPR and HIPAA requirements for data protection and confidentiality. Organizations using affected Admidio versions may face compliance violations, legal penalties, and reputational damage.

Mitigation Strategies

Upgrade Admidio to version 4.3.18, 5.0.15, or later. If immediate upgrade isn't possible, apply input validation to sanitize the url parameter in system/redirect.php to block javascript: URLs.

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