CVE-2026-52892

Deferred Deferred - Pending Action

Wekan Custom Field Modification via Insufficient Access Control

Publication date: 2026-07-15

Last updated on: 2026-07-16

Assigner: GitHub, Inc.

Description

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.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-07-15

Last Modified

2026-07-16

Generated

2026-08-05

AI Q&A

2026-07-16

EPSS Evaluated

2026-08-03

NVD

CVE-2026-52892

Affected Vendors & Products

Vendor	Product	Version / Range
wekan	wekan	to 9.32 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-862	The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

Executive Summary

Wekan is an open-source kanban tool built with Meteor. Prior to version 9.32, it had a vulnerability where REST handlers for custom fields used read-level access checks instead of write-level checks. This allowed read-only board members to create, update, or delete custom fields via POST, PUT, and DELETE requests.

Detection Guidance

To detect this vulnerability, check Wekan versions prior to 9.32. Verify if read-only board members can perform write operations like creating, updating, or deleting custom fields via API endpoints /api/boards/:boardId/custom-fields. Review server logs for unauthorized POST, PUT, or DELETE requests to these endpoints by non-admin users.

Impact Analysis

A read-only board member could modify or delete custom fields, potentially disrupting workflows or altering board configurations. This could lead to data integrity issues or unauthorized changes in project management boards.

Compliance Impact

This vulnerability may impact compliance by allowing unauthorized modifications to board data, potentially violating integrity requirements in GDPR or HIPAA. Unauthorized changes could lead to data corruption or loss of audit trails.

Mitigation Strategies

Upgrade Wekan to version 9.32 or later to address the improper access control in custom field handlers.

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