Executive brief
Wekan is an open-source project management tool used to organize tasks on digital boards. A security flaw allowed any logged-in user to copy private boards belonging to other teams or individuals without permission. This could lead to the unauthorized exposure of sensitive project data, including task descriptions, checklists, and internal rules.
Technical details
The `copyBoard` Meteor DDP method in `server/publications/boards.js` failed to implement authorization checks, such as verifying `this.userId` or board membership. An authenticated attacker could invoke this method with a target `boardId` to create a full clone of a private board, including its cards, checklists, and custom fields. Furthermore, the method allowed property injection by looping over caller-supplied properties, enabling attackers to modify the new board's permissions (e.g., making it 'public') or adding themselves as an administrator. While the REST API correctly enforced admin checks, the DDP implementation remained vulnerable until version 9.32, which now requires board admin privileges (`board.hasAdmin`).
Affected products
- Wekan Wekan < 9.32
Timeline
- 2026-05-30: advisory: GHSA-7w2h-g83c-jqrp published
- 2026-05-31: patched: Fixed in version 9.32
- 2026-07-15: disclosed: CVE-2026-53445 published