CVE-2026-25530: Kanboard is missing authorization check in getSwimlane API allows cross-project data access

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-02-10 · updated 2026-06-17
Weakness: CWE-639

Description

Kanboard is project management software focused on Kanban methodology. Prior to 1.2.50, the getSwimlane API method lacks project-level authorization, allowing authenticated users to access swimlane data from projects they cannot access. This vulnerability is fixed in 1.2.50.

Affected products

kanboard: before 1.2.50 — fixed in 1.2.50

How to fix

Upgrade to a fixed version: kanboard 1.2.50. Check the vendor advisory for mitigations.

References

https://github.com/kanboard/kanboard/commit/c3d8d20e05322b09e036fed7afb57194d624a414
https://github.com/kanboard/kanboard/releases/tag/v1.2.50
https://github.com/kanboard/kanboard/security/advisories/GHSA-6rxw-vvvj-r93q

Get alerted when CVE-2026-25530 or the next vulnerability affects your stack