---
id: CVE-2026-69091
title: >-
  Admidio before 5.0.11 contains an authentication bypass vulnerability in the
  forum module when configured in login-only mode
summary: >-
  Admidio before 5.0.11 contains an authentication bypass vulnerability in the
  forum module when configured in login-only mode. The access control logic in
  modules/forum.php fails to validate the login-only configuration state,
  allowing un…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-306
published: '2026-08-03'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T20:35:08.537'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-69091'
references:
  - url: 'https://github.com/Admidio/admidio/security/advisories/GHSA-cf48-6jrq-gjcm'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/admidio-before-authentication-bypass-via-forum-php
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00613
epssPercentile: 0.47119
ingestedAt: '2026-09-09T21:22:45.521Z'
---

## Overview

Admidio before 5.0.11 contains an authentication bypass vulnerability in the forum module when configured in login-only mode. The access control logic in modules/forum.php fails to validate the login-only configuration state, allowing unauthenticated attackers to read forum topics and posts by directly accessing the module with read-only parameters.

## Remediation

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