Medium severity · published Oct 12, 2026
CVE-2026-109328
Admidio 5.0.0 before 5.0.15 Unauthenticated Stored XSS via Registration Name
6.1
CVSS
0.2%
EPSS
No
On KEV
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.
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)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AD
admidio · Admidio
5.0.0 before 5.0.15 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-109328
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-109328
vendor-advisory
https://github.com/Admidio/admidio/security/advisories/GHSA-c86v-h8qw-rxjp
third-party-advisory
https://www.vulncheck.com/advisories/admidio-5.0.0-before-5.0.15-unauthenticated-stored-xss-via-registration-name
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