Authorization bypass through user-controlled key in Wekan - #VU145037
Published: August 25, 2026
Vulnerability identifier: #VU145037
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-639
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to improper access control in subtaskItems export queries across the board export endpoints when exporting a public board. A remote user can set the parentId field on a private card to reference a card on a public board and then download the public board export to disclose sensitive information.
All five export formats are affected, and no user interaction is required.
Affected software
Wekan
Remediation
Install security update from vendor's website.
Wekan - update to 11.11