Vulnerability in Kanboard
CVE-2026-29056
Kanboard is project management software focused on Kanban methodology. Prior to 1.2.51, Kanboard's user invite registration endpoint (`UserInviteController::register()`) accepts all POST parameters and passes them to `UserModel::create()` without filtering out the `role` field. An attacker who receives an invite link can inject `role=app-admin` in the registration form to create an administrator account. Version 1.2.51 fixes the issue.
Vulnerability class: Mass Assignment
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (44.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002
Affected products
- Kanboard — versions < 1.2.51
Weakness classification (CWE)
References
- github.com/kanboard/kanboard/security/advisories/GHSA-2jvj-q44v-6p3x (Exploit, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-29056?
- CVE-2026-29056 is a high-severity vulnerability in Kanboard, classified under Improperly Controlled Modification of Dynamically-Determined Object Attributes. CVSS score: 8.8/10. Published 2026-03-18.
- How severe is CVE-2026-29056?
- High severity. CVSS v3 base score is 8.8 out of 10.