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OpenAdvisories
Medium · 6.5 CVE-2026-68559 EUVD-2026-62700

Wekan: Broken access control in the Excel-export route (`/api/boards/:boardId/exportExcel`)

Published Aug 19, 2026 · Updated Aug 19, 2026 · Assigned by GitHub_M

Description

Wekan is open source kanban built with Meteor. From 9.57 until 9.74, the /api/boards/:boardId/exportExcel route in models/exportExcel.js called the asynchronous exporterExcel.canExport(user) authorization guard from models/server/ExporterExcel.js without awaiting it. The returned Promise was always truthy, so exporterExcel.build(res) ran even when board.isVisibleBy(user) would deny access, allowing any authenticated non-member to download private board card titles, descriptions, lists, swimlanes, members, and metadata. This issue is fixed in version 9.74.

Affected products

VendorProductAffectedFixed
wekan wekan >= 9.57, < 9.74 —

References