CVE-2026-104961 Plane: WorkspaceOwnerPermission missing is_active check allows deactivated users to retain owner access
Deactivated users retain workspace owner privileges due to missing active status checks, allowing unauthorized access to owner-level functions.
- 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-2026-104961?
CVE-2026-104961 is a medium-severity authentication bypass vulnerability in makeplane plane, published on 5 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Plane is an open-source project management tool. Prior to 1.4.0, WorkspaceOwnerPermission does not require is_active=True when checking whether a user is a workspace owner. A deactivated user can therefore remain authorized as the workspace owner and retain owner-level access. This issue is fixed in 1.4.0.
Weakness: CWE-863
Which versions are affected by CVE-2026-104961?
How do I fix CVE-2026-104961?
No fix has been published for CVE-2026-104961 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-104961 being exploited?
There is no known exploitation of CVE-2026-104961 in the wild and no public exploit code.
Sources
Also known as GHSA-wjgv-cq7w-258v.