Missing Authorization in Wekan - CVE-2026-52892
Published: July 28, 2026
Vulnerability identifier: #VU139858
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-52892
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: wekan.github.io
Affected software:
Wekan
Wekan
Detailed vulnerability description
The vulnerability allows a remote user to modify board custom fields and dropdown items.
The vulnerability exists due to improper access control in the custom fields REST handlers in server/models/customFields.js when handling authenticated mutating API requests for board custom fields. A remote user can send crafted POST, PUT, or DELETE requests to modify board custom fields and dropdown items.
Only instances with WITH_API=true are vulnerable. The issue is limited to boards where the user is already a read-only member.
How to mitigate CVE-2026-52892
Install security update from vendor's website.