Vulnerability · Published Jul 15, 2026 · Assigned by GitHub_M

CVE-2026-55234Wekan: 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 8.5

In plain English

A high-severity improper access control in wekan from wekan. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).

Severity (CVSS 3.1)8.5High

Exploit odds (30 days)0.4%top 63.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
wekan	wekan	< 9.37

Weakness: CWE-284, CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L

References

https://github.com/wekan/wekan/security/advisories/GHSA-gm7v-pc38-53jr x_refsource_CONFIRM
https://github.com/wekan/wekan/commit/d369a3614a4737c29d48a6345a790edf2506ddae x_refsource_MISC
https://github.com/wekan/wekan/releases/tag/v9.37 x_refsource_MISC