CVE-2026-109327

EUVD-2026-97629

12.10.2026, 17:17

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.

Cross-site Scripting

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
VulnCheck	CNA	6.1 MEDIUM	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Base Score

CVSS 3.x

EPSS Score

Percentile: Unknown

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources.

Vendor	Product	Version	Source
admidio	admidio	4.0.12 ≤ 𝑥 ≤ 4.3.17	CNA
admidio	admidio	5.0.0 ≤ 𝑥 < 5.0.15	CNA

Common Weakness Enumeration

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
The software 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.

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