Auth bypass in Kanboard
CVE-2026-25531
Kanboard is project management software focused on Kanban methodology. Prior to 1.2.50, The fix for CVE-2023-33968 is incomplete. The TaskCreationController::duplicateProjects() endpoint does not validate user permissions for target projects, allowing authenticated users to duplicate tasks into projects they cannot access. This vulnerability is fixed in 1.2.50.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (26.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Kanboard — versions < 1.2.50
Weakness classification (CWE)
References
- github.com/kanboard/kanboard/security/advisories/GHSA-vrm3-3337-whp9 (Exploit, Mitigation, Vendor Advisory)
- github.com/kanboard/kanboard/commit/df7b7a21ee071f36466d8b38e40d0b0b8b8d394d (Patch)
- github.com/kanboard/kanboard/releases/tag/v1.2.50 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-25531?
- CVE-2026-25531 is a medium-severity vulnerability in Kanboard, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-02-13.
- How severe is CVE-2026-25531?
- Medium severity. CVSS v3 base score is 4.3 out of 10.