Vulnerability · Published Oct 12, 2026 · Assigned by VulnCheck

CVE-2026-109328Admidio 5.0.0 before 5.0.15 Unauthenticated Stored XSS via Registration Name

Medium 6.1

In plain English

A medium-severity cross-site scripting in admidio from Admidio. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).

Severity (CVSS 3.1)6.1Medium

Exploit odds (30 days)0.2%top 84.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
Admidio	admidio	5.0.0 – before 5.0.15

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

GitHub Security Advisory (GHSA-c86v-h8qw-rxjp) vendor-advisory
VulnCheck Advisory: Admidio 5.0.0 before 5.0.15 Unauthenticated Stored XSS via Registration Name third-party-advisory