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)

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Summary

CVECVE-2026-55234
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-15 22:17:25 UTC
Updated2026-07-16 16:19:13 UTC
DescriptionWekan 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.

Risk And Classification

Primary CVSS: v3.1 8.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L

Problem Types: CWE-284 | CWE-639 | CWE-284 CWE-284: Improper Access Control | CWE-639 CWE-639: Authorization Bypass Through User-Controlled Key

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.5HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L
3.1CNADECLARED8.5HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
High
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Wekan Wekan affected < 9.37 Not specified

References

ReferenceSourceLinkTags
github.com/wekan/wekan/security/advisories/GHSA-gm7v-pc38-53jr 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/wekan/wekan/commit/d369a3614a4737c29d48a6345a790edf2506ddae [email protected] github.com
github.com/wekan/wekan/releases/tag/v9.37 [email protected] github.com
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