CVE-2026-25531 Kanboard TaskCreationController::duplicateProjects() endpoint does not validate user permissions for target projects
Authenticated users can duplicate tasks into unauthorized projects due to missing permission checks in Kanboard.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-25531?
CVE-2026-25531 is a medium-severity missing authorization vulnerability in kanboard, published on 13 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Kanboard is project management software focused on Kanban methodology. Prior to 1.2.50, The fix for CVE-2023-33968 is incomplete. The TaskCreationController::duplicateProjects() endpoint does not validate user permissions for target projects, allowing authenticated users to duplicate tasks into projects they cannot access. This vulnerability is fixed in 1.2.50.
Weakness: CWE-862
Which versions are affected by CVE-2026-25531?
It affects 1 product.
Products include Kanboard Kanboard.
How do I fix CVE-2026-25531?
No fix has been published for CVE-2026-25531 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-25531 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-25531 exists.
Other vulnerabilities in kanboard
- CVE-2026-21881 Kanboard is Vulnerable to Reverse Proxy Authentication Bypass
- CVE-2025-55010 Kanboard Authenticated Admin Remote Code Execution via Unsafe Deserialization of Events
- CVE-2024-51747 Arbitrary File Read and Delete in kanboard
- CVE-2024-51748 Remote code execution through language setting in kanboard
- CVE-2017-12850 Business logic in n/a
Sources
Also known as GHSA-vrm3-3337-whp9, UBUNTU-CVE-2026-25531.