{"id":"DEBIAN-CVE-2025-52576","details":"Kanboard is project management software that focuses on the Kanban methodology. Prior to version 1.2.46, Kanboard is vulnerable to username enumeration and IP spoofing-based brute-force protection bypass. By analyzing login behavior and abusing trusted HTTP headers, an attacker can determine valid usernames and circumvent rate-limiting or blocking mechanisms. Any organization running a publicly accessible Kanboard instance is affected, especially if relying on IP-based protections like Fail2Ban or CAPTCHA for login rate-limiting. Attackers with access to the login page can exploit this flaw to enumerate valid usernames and bypass IP-based blocking mechanisms, putting all user accounts at higher risk of brute-force or credential stuffing attacks. Version 1.2.46 contains a patch for the issue.","modified":"2026-05-07T20:01:44.760952Z","published":"2025-06-25T17:15:39.023Z","withdrawn":"2026-05-07T20:01:44.760952Z","upstream":["CVE-2025-52576"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-52576"}],"affected":[{"package":{"name":"kanboard","ecosystem":"Debian:14","purl":"pkg:deb/debian/kanboard?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.47+ds-1"}]}],"versions":["1.2.22+ds-1","1.2.23+ds-1","1.2.23+ds-1.1","1.2.25+ds-1","1.2.25+ds-2","1.2.25+ds-3","1.2.26+ds-1","1.2.26+ds-2","1.2.26+ds-3","1.2.26+ds-4","1.2.30+ds-1","1.2.31+ds-1","1.2.31+ds2-1","1.2.44+ds-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-52576.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"}]}