XSS in Admidio
CVE-2026-109328
Admidio 5.0.0 before 5.0.15 contains an unauthenticated stored cross-site scripting vulnerability in RegistrationPresenter.php, which inserts the raw FIRST_NAME registration value into an unencoded data-message attribute. Attackers can register with a double-quoted event handler that executes JavaScript in an administrator's session when they hover the entry on the Manage registrations page.
Vulnerability class: XSS (Cross-Site Scripting)
Published .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/Admidio/admidio/security/advisories/GHSA-c86v-h8qw-rxjp (vendor-advisory)
- www.vulncheck.com/advisories/admidio-5.0.0-before-5.0.15-unauthenticated-stored… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-109328?
- CVE-2026-109328 is a medium-severity vulnerability in Admidio, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-10-12.
- How severe is CVE-2026-109328?
- Medium severity. CVSS v3 base score is 6.1 out of 10.