CVE-2026-109328 Admidio 5.0.0 before 5.0.15 Unauthenticated Stored XSS via Registration Name
Unauthenticated attackers can inject JavaScript via registration names, leading to session hijacking when administrators view the entry.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-109328?
CVE-2026-109328 is a medium-severity cross-site scripting vulnerability in admidio, published on 12 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2026-109328?
How do I fix CVE-2026-109328?
No fix has been published for CVE-2026-109328 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-109328 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-109328 exists.
Sources
Also known as GHSA-c86v-h8qw-rxjp, GHSA-j47v-vx83-x99p.