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CVE-2026-68559

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

Published: Aug 19, 2026Updated: Aug 19, 2026 Sources: CVE List NVDCWE-639
6.5MEDIUM
NVD MITRE
EPSS Score
0.3%
Top 78.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-639

Affected Products

wekan
oss-project
wekanOn-prem
Enterprise Software / collaboration-groupware

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Initial Access
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References

https://github.com/wekan/wekan/commit/7bbd1a3fad5d868fd01d79b5908913e215698e8e
github.com
https://github.com/wekan/wekan/releases/tag/v9.74
github.com
https://github.com/wekan/wekan/security/advisories/GHSA-mwq8-ccpm-r533
github.com

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