Missing Authentication for Critical Function in Admidio - #VU144271
Published: August 19, 2026
Vulnerability identifier: #VU144271
CSH Severity: Medium
CVSS v4: 8.7 [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]
CVE-ID: N/A
CWE-ID: CWE-306
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to missing authentication for the RSS feed endpoints in rss/forum.php and rss/announcements.php when handling unauthenticated GET requests to login-only modules. A remote attacker can send a specially crafted request to disclose sensitive information.
Exposure occurs when RSS is enabled, the forum or announcements module is configured as login-only, and at least one category has no explicit view-role restriction.
Affected software
Admidio
Remediation
Install security update from vendor's website.
Admidio - update to 5.0.12