LDAP injection in Kanboard - CVE-2026-21880
Published: January 7, 2026 / Updated: January 9, 2026
Vulnerability identifier: #VU121016
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-21880
CWE-ID: CWE-90
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to improper input validation within LDAP authentication mechanism. A remote attacker can send a specially crafted LDAP query to the application, bypass authentication process and gain unauthorized access to sensitive information on the system.
Affected software
Kanboard
How to mitigate CVE-2026-21880
Install updates from vendor's website.
Kanboard - update to 1.2.49