Wekan up to 9.73 Excel Export ExporterExcel.js exporterExcel.canExport improper authorization

Summaryinfo

A vulnerability classified as problematic was found in Wekan up to 9.73. This vulnerability affects the function exporterExcel.canExport of the file models/server/ExporterExcel.js of the component Excel Export. The manipulation results in improper authorization. This vulnerability is known as CVE-2026-68559. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Wekan up to 9.73. Affected is the function exporterExcel.canExport of the file models/server/ExporterExcel.js of the component Excel Export. The manipulation with an unknown input leads to a improper authorization vulnerability. CWE is classifying the issue as CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-68559 since 07/30/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1548.002 by the MITRE ATT&CK project.

Upgrading to version 9.74 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-62700). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• Wekan

Version

• 9.0
• 9.1
• 9.2
• 9.3
• 9.4
• 9.5
• 9.6
• 9.7
• 9.8
• 9.9
• 9.10
• 9.11
• 9.12
• 9.13
• 9.14
• 9.15
• 9.16
• 9.17
• 9.18
• 9.19
• 9.20
• 9.21
• 9.22
• 9.23
• 9.24
• 9.25
• 9.26
• 9.27
• 9.28
• 9.29
• 9.30
• 9.31
• 9.32
• 9.33
• 9.34
• 9.35
• 9.36
• 9.37
• 9.38
• 9.39
• 9.40
• 9.41
• 9.42
• 9.43
• 9.44
• 9.45
• 9.46
• 9.47
• 9.48
• 9.49
• 9.50
• 9.51
• 9.52
• 9.53
• 9.54
• 9.55
• 9.56
• 9.57
• 9.58
• 9.59
• 9.60
• 9.61
• 9.62
• 9.63
• 9.64
• 9.65
• 9.66
• 9.67
• 9.68
• 9.69
• 9.70
• 9.71
• 9.72
• 9.73

Website

• Product: https://github.com/wekan/wekan/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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