Wekan up to 9.36 Permissions cards.js boardId improper authorization

Summaryinfo

A vulnerability, which was classified as critical, was found in Wekan up to 9.36. Affected is an unknown function of the file server/permissions/cards.js of the component Permissions. Executing a manipulation of the argument boardId can lead to improper authorization. The identification of this vulnerability is CVE-2026-55234. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability has been found in Wekan up to 9.36 and classified as critical. This vulnerability affects some unknown functionality of the file server/permissions/cards.js of the component Permissions. The manipulation of the argument boardId with an unknown input leads to a improper authorization vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Wekan is open source kanban built with Meteor. Prior to 9.37, Wekan DDP update allow rules in server/permissions/cards.js, server/permissions/lists.js, and server/permissions/swimlanes.js authorize against the stored source boardId and do not validate a new boardId in the update modifier. Any authenticated user with write access to their own board can call /cards/update, /lists/update, or /swimlanes/update to move cards, lists, or swimlanes into a private board they are not a member of. This issue is fixed in version 9.37.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-55234 since 06/16/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1548.002.

Upgrading to version 9.37 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

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

Website

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

CPE 2.3info

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