Incorrect authorization in Admidio - CVE-2026-41657
Published: April 23, 2026
Vulnerability identifier: #VU127167
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-41657
CWE-ID: CWE-863
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to incorrect authorization in contacts_data.php when handling requests with mem_show_filter=3. A remote privileged user can send a specially crafted request to disclose sensitive information.
In multi-organization deployments, the issue bypasses organization isolation and can expose user records from other organizations sharing the same database.
Affected software
Admidio
How to mitigate CVE-2026-41657
Install security update from vendor's website.
Admidio - update to 5.0.9