What’s Vulnerable › Vulnerabilities

CVE-2026-109327: Admidio 4.0.12 through 4.3.17 and 5.0.0 before 5.0.15 Reflected XSS via system/redirect.php

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-12 · updated 2026-10-15
• Weakness: CWE-79

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.

Affected products

• admidio: from 4.0.12 through 4.3.17; from 5.0.0 before 5.0.15 — fixed in 5.0.15

How to fix

Upgrade to a fixed version: admidio 5.0.15. Check the vendor advisory for mitigations.

References

• https://github.com/Admidio/admidio/security/advisories/GHSA-vxfg-x6vc-7w3w
• https://www.vulncheck.com/advisories/admidio-4.0.12-through-4.3.17-and-5.0.0-before-5.0.15-reflected-xss-via-system-redirect-php
• https://github.com/Admidio/admidio/security/advisories/GHSA-vxfg-x6vc-7w3w

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