Auth bypass in Kanbn Kan
CVE-2026-92802
kan through 0.6.0 fails to properly validate board creation permissions in the GitHub project import endpoint, allowing guests to create boards despite lacking board:create permission. Attackers can bypass authorization checks by using the importProjects mutation to create boards while remaining blocked on direct creation paths.
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: 0.004 (30.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.4% 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: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/kanbn/kan/issues/628 (issue-tracking)
- github.com/kanbn/kan (product)
- github.com/kanbn/kan/blob/v0.6.0/packages/api/src/routers/import.ts (technical-description)
- github.com/kanbn/kan/blob/f08920d/packages/api/src/routers/import.ts (technical-description)
- www.vulncheck.com/advisories/kan-through-0.6.0-authorization-bypass-via-github-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-92802?
- CVE-2026-92802 is a medium-severity vulnerability in Kanbn Kan, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-09-16.
- How severe is CVE-2026-92802?
- Medium severity. CVSS v3 base score is 4.3 out of 10.