CVE-2025-52576 Affecting kanboard package, versions <1.2.47+ds-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.05% (15th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-KANBOARD-12240202
  • published30 Aug 2025
  • disclosed25 Jun 2025

Introduced: 25 Jun 2025

CVE-2025-52576  (opens in a new tab)

How to fix?

Upgrade Debian:unstable kanboard to version 1.2.47+ds-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kanboard package and not the kanboard package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1