Authentication Bypass in Admidio Forum Module
CVE-2026-69091

8.7HIGH

Key Information:

Vendor

Admidio

Status
Admidio
Vendor
CVE Published:
3 August 2026

What is CVE-2026-69091?

Admidio versions before 5.0.11 have a vulnerability in the forum module that allows unauthenticated users to bypass access controls when the module is in login-only mode. The flawed access control logic within modules/forum.php fails to check the login-only configuration correctly. This misconfiguration permits unauthorized access to read forum posts and topics directly, posing a risk to sensitive information and user privacy.

Affected Version(s)

admidio 0 < 5.0.11

admidio 5.0.11

References

https://github.com/Admidio/admidio/security/advisories/GH...
vendor-advisory
https://www.vulncheck.com/advisories/admidio-before-authe...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

nuiifornet
.