medium6.5
CVE-2026-104969
Plane is an open-source project management tool.
Impact
Plane is an open-source project management tool. Prior to 1.4.0, the cycle-issues endpoint accepts issue UUIDs in the request body without validating that they belong to the caller's workspace. An authenticated user can add issues from any workspace to a cycle they control. If a victim issue is already assigned to a cycle, the operation removes it from the victim's cycle, causing a destructive cross-tenant write. This issue is fixed in 1.4.0.
Affected products
| Product | Affected versions |
|---|---|
| Plane Is An Open-Source Project Management Tool. | before 1.4.0 |
Versions were read from the advisory text. No structured product data has been published for this record yet.