Medium severity · published Oct 12, 2026
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
6.1
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 17% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AD
admidio · Admidio
4.0.12 through 4.3.17; 5.0.0 before 5.0.15 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-109327
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-109327
vendor-advisory
https://github.com/Admidio/admidio/security/advisories/GHSA-vxfg-x6vc-7w3w
third-party-advisory
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
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