CVE-2026-52892: Wekan: Read-only board members can create/modify/delete Custom Fields (privilege escalation via read-level authz on write ops)
Wekan is open source kanban built with Meteor. Prior to 9.32, Wekan REST handlers in server/models/customFields.js use read-level Authentication.checkBoardAccess instead of write-level Authentication.checkBoardWriteAccess for mutating custom-field routes. A read-only board member can call POST, PUT, and DELETE handlers for /api/boards/:boardId/custom-fields and custom-field dropdown items to create, update, or delete board custom fields. This issue is fixed in version 9.32.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Wekanto a version that resolves this vulnerability.Fixed in 9.32
Event History
Frequently Asked Questions
What is the severity of CVE-2026-52892?
The severity of CVE-2026-52892 is rated as medium with a score of 6.5.
How do I fix CVE-2026-52892?
To fix CVE-2026-52892, upgrade Wekan to version 9.32 or later where the vulnerability is addressed.
What type of vulnerability is CVE-2026-52892?
CVE-2026-52892 is a privilege escalation vulnerability that allows read-only board members to modify custom fields.
What does CVE-2026-52892 affect?
CVE-2026-52892 affects the Wekan open source kanban software prior to version 9.32.
Who can exploit CVE-2026-52892?
A read-only board member can exploit CVE-2026-52892 to create, modify, or delete custom fields.