PT-2025-26861 · Kanboard · Kanboard
Bryanqb07
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Published
2025-06-25
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Updated
2025-06-25
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CVE-2025-52576
CVSS v3.1
5.3
Medium
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
Name of the Vulnerable Software and Affected Versions:
Kanboard versions prior to 1.2.46
Description:
Kanboard is project management software that focuses on the Kanban methodology. Prior to version 1.2.46, it 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.
Recommendations:
For versions prior to 1.2.46, update to version 1.2.46 to resolve the issue. As a temporary workaround, consider restricting access to the login page or implementing additional security measures to minimize the risk of exploitation. Avoid relying solely on IP-based protections for login rate-limiting.
Exploit
Fix
Side Channel Attack
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Weakness Enumeration
Related Identifiers
Affected Products
Kanboard