What’s Vulnerable › Vulnerabilities

CVE-2026-52892: Wekan: Read-only board members can create/modify/delete Custom Fields (privilege escalation via read-level authz on write ops)

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-15 · updated 2026-07-16
• Weakness: CWE-862

Description

Wekan is open source kanban built with Meteor. Prior to 9.32, Wekan REST handlers in server/models/customFields.js use read-level Authentication.checkBoardAccess instead of write-level Authentication.checkBoardWriteAccess for mutating custom-field routes. A read-only board member can call POST, PUT, and DELETE handlers for /api/boards/:boardId/custom-fields and custom-field dropdown items to create, update, or delete board custom fields. This issue is fixed in version 9.32.

Affected products

• WeKan: before 9.32

References

• https://github.com/wekan/wekan/commit/70db04a93fedabe40331f21f86e6bdc91625914e
• https://github.com/wekan/wekan/releases/tag/v9.32
• https://github.com/wekan/wekan/security/advisories/GHSA-6733-4wgq-8xvr

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