---
id: CVE-2026-109328
title: >-
  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
summary: >-
  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 r…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: Admidio
product: admidio
affected:
  - admidio >= 5.0.0 < 5.0.15
published: '2026-10-12'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T15:14:38.513'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109328'
references:
  - url: 'https://github.com/Admidio/admidio/security/advisories/GHSA-c86v-h8qw-rxjp'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/admidio-5.0.0-before-5.0.15-unauthenticated-stored-xss-via-registration-name
    label: disclosure@vulncheck.com
  - url: 'https://github.com/Admidio/admidio/security/advisories/GHSA-c86v-h8qw-rxjp'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.0024
epssPercentile: 0.15039
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-13T16:03:39.109361Z'
ingestedAt: '2026-10-12T18:00:08.203Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.