CVE-2026-58660
Kanboard BoardAjaxController Missing Ownership Check via Drag-and-Drop
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
Kanboard through 1.2.52, fixed in commit 564cc30, BoardAjaxController save() method (used by the kanban board drag-and-drop endpoint) validates the caller's role on the attacker-supplied project_id but never verifies that the supplied task_id actually belongs to that project. Because task identifiers are sequential integers shared across the entire instance, any authenticated user who is a member of at least one project can enumerate and move (corrupt/hide) tasks belonging to any other project on the same instance, including private projects they have no membership or role on.
| CWE | CWE-639 |
| Vendor | kanboard |
| Product | kanboard |
| Published | Jul 15, 2026 |
| Last Updated | Jul 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High
Affected Versions
kanboard / kanboard
0 < 1.2.52
References
github.com: https://github.com/kanboard/kanboard/issues/5852 github.com: https://github.com/kanboard/kanboard/pull/5853 github.com: https://github.com/kanboard/kanboard/commit/564cc30e1e360959572e01e158734d9475c05903 vulncheck.com: https://www.vulncheck.com/advisories/kanboard-boardajaxcontroller-missing-ownership-check-via-drag-and-drop
Credits
George Chen