CVE-2026-55234CWE-284CWE-639

Wekan: Broken access control: any authenticated user can move their Cards/Lists/Swimlanes into a private board they are not a member of (cross-board write via collection allow rule)

High · published July 15, 2026

CVSS v3.1
8.5
EPSS
0%
Percentile
35.7
In the wild
Unconfirmed
What it is

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 record
Technical detail
CVSS v3.1
8.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L
CVSS v4.0
Not supplied
EPSS
0.00425 · 35.7th percentile
Weaknesses
CWE-284 · Improper Access Control; CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-07-15T21:13Z
EPSS history
Timeline
  • 15 JUL 21:13Z
    Wekan: Broken access control: any authenticated user can move their Cards/Lists/Swimlanes into a private board they are not a member of (cross-board write via collection allow rule)
    cvelistv5