CVE-2025-52576

published 2025-06-25

CVE-2025-52576: 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…

Priority P4 31 medium 5.3 CVSS 3.1

AV N AC L PR N UI N S U C L I N A N

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.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
debian	kanboard	< kanboard 1.2.47+ds-1 (forky)	kanboard 1.2.47+ds-1 (forky)
kanboard	kanboard	< 1.2.46	1.2.46
kanboard	kanboard	>= 0 < 1.2.47+ds-1	1.2.47+ds-1
msrc	cbl2_kernel_5.15.182.1-1_on_cbl_mariner_2.0	—	—

CVSS provenance

nvd v3.1 5.3 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

osv 5.3 MEDIUM

vendor_msrc 5.5 MEDIUM

vendor_debian 5.3 MEDIUM

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.

CWE-203 CWE-416