CVE-2026-69091 HIGH

CVE-2026-69091: Admidio before 5.0.11 Authentication Bypass via forum.php

Vendor Admidio

Product admidio

Weakness CWE-306 · Missing auth

Published August 3, 2026

Last update August 3, 2026

View on NVD All CVEs

CVSS base score

8.7/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality —

Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

August 3, 2026 CVE published

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-69091 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/306.html AskarLabs — CWE-306 write-up Missing Authentication for Critical Function

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04Related CVE

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