Auth bypass in Usekaneo Kaneo
CVE-2026-63104
Kaneo versions 2.3.12 before 2.12.2 contain a missing authorization vulnerability that allows authenticated workspace members with viewer or member roles to delete and modify tasks beyond their assigned permissions by exploiting the bulk task endpoint that omits workspace permission checks. Attackers can send requests to the PATCH /api/task/bulk endpoint, which verifies only workspace membership without calling the role-based permission check enforced on all other task endpoints, to permanently delete all tasks or modify task status, priority, assignee, due date, and labels in a workspace.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (42.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/usekaneo/kaneo/security/advisories/GHSA-gx46-mfgj-vm86 (vendor-advisory)
- github.com/usekaneo/kaneo/releases/tag/v2.12.2 (release-notes, patch)
- www.vulncheck.com/advisories/kaneo-missing-authorization-via-bulk-task-endpoint (third-party-advisory)
Frequently asked questions
- What is CVE-2026-63104?
- CVE-2026-63104 is a high-severity vulnerability in Usekaneo Kaneo, classified under Missing Authorization. CVSS score: 8.1/10. Published 2026-09-22.
- How severe is CVE-2026-63104?
- High severity. CVSS v3 base score is 8.1 out of 10.