CSRF in Kanboard

CVE-2026-24885

Kanboard is project management software focused on Kanban methodology. Prior to 1.2.50, a Cross-Site Request Forgery (CSRF) vulnerability exists in the ProjectPermissionController within the Kanboard application. The application fails to strictly enforce the application/json Content-Type for the changeUserRole action. Although the request body is JSON, the server accepts text/plain, allowing an attacker to craft a malicious form using the text/plain attribute. Which allows unauthorized modification of project user roles if an authenticated admin visits a malicious site This vulnerability is fixed in 1.2.50.

Vulnerability class: CSRF (Cross-Site Request Forgery)

EPSS: 0.002 (8.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-24885?
CVE-2026-24885 is a medium-severity vulnerability in Kanboard, classified under Cross-Site Request Forgery (CSRF). CVSS score: 5.7/10. Published 2026-02-10.
How severe is CVE-2026-24885?
Medium severity. CVSS v3 base score is 5.7 out of 10.