Improper access control in GLPI - CVE-2020-26212
Published: November 25, 2020 / Updated: May 4, 2026
Vulnerability identifier: #VU129532
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-26212
CWE-ID: CWE-284
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 improper access control in the CalDAV calendar access control logic when handling CalDAV synchronization requests. A remote user can authenticate with valid user credentials and access other users' or groups' calendars to disclose sensitive information.
The exposed access is read-only and affects personal and group planning data, including administrator calendars.
Affected software
GLPI
How to mitigate CVE-2020-26212
Install security update from vendor's website.
GLPI - update to 9.5.1