CVE-2026-87028 Cross-Board IDOR in the Board Custom Slot Preview in Concrete CMS 9.0.0 through 9.5.3 Discloses Restricted Page Summary Fields

Concrete CMS 9 through 9.5.3 did not confirm that a board InstanceItem submitted to the custom-slot preview endpoint belonged to the board instance the requesting user was authorized to edit, and did not enforce page-view permission before generating page-backed summary content. As a result, an...

CVE-2026-68530

Concrete CMS 9 through 9.5.2 did not perform an authorization check on several board-instance actions in the Boards area of the Dashboard. The instance details single-page controller resolved a board instance directly from an attacker-supplied instance ID and then viewed, refreshed, regenerated, ...

CVE-2026-18421

Concrete CMS 9 through 9.5.2 does not perform an authorization check in three actions of the Boards data source dashboard controller update, updatedatasource, and deletedatasource, which resolve a ConfiguredDataSource directly from an attacker-supplied identifier without confirming the requester'...

EUVD-2026-79187

Concrete CMS 9 through 9.5.2 does not perform an authorization check in three actions of the Boards data source dashboard controller update, updatedatasource, and deletedatasource, which resolve a ConfiguredDataSource directly from an attacker-supplied identifier without confirming the requester'...

CVE-2026-18421 Concrete CMS 9.0.0-9.5.2 Boards data source dashboard is missing an authorization check, allowing a low-privileged board editor to modify or delete configured data sources on boards they do not control

Concrete CMS 9 through 9.5.2 does not perform an authorization check in three actions of the Boards data source dashboard controller update, updatedatasource, and deletedatasource, which resolve a ConfiguredDataSource directly from an attacker-supplied identifier without confirming the requester'...

EUVD-2026-79180

Concrete CMS 9 through 9.5.2 did not perform an authorization check on several board-instance actions in the Boards area of the Dashboard. The instance details single-page controller resolved a board instance directly from an attacker-supplied instance ID and then viewed, refreshed, regenerated, ...

CVE-2026-55234

Wekan (open source Kanban on Meteor) has a cross-board write flaw in versions before 9.37. The DDP update allow rules in server/permissions/cards.js, server/permissions/lists.js, and server/permissions/swimlanes.js validate only the stored boardId and do not verify a new boardId in the update mod...

PT-2026-57225

Wekan is open source kanban built with Meteor. Prior to 9.64, Wekan has a cross-board authorization bypass in the direct Meteor collection allow rules for Checklists and ChecklistItems because updates are authorized only against the current source doc.cardId and do not inspect the destination...

CVE-2026-30843

Wekan is an open source kanban tool built with Meteor. Versions 8.32 and 8.33 have a critical Insecure Direct Object Reference IDOR issue which could allow unauthorized users to modify custom fields across boards through its custom fields update endpoints, potentially leading to unauthorized data...

CVE-2026-30843 Wekan has Cross-Board IDOR in Custom Fields Update Endpoints

Wekan is an open source kanban tool built with Meteor. Versions 8.32 and 8.33 have a critical Insecure Direct Object Reference IDOR issue which could allow unauthorized users to modify custom fields across boards through its custom fields update endpoints, potentially leading to unauthorized data...

CVE-2026-30843

Wekan is an open source kanban tool built with Meteor. Versions 8.32 and 8.33 have a critical Insecure Direct Object Reference IDOR issue which could allow unauthorized users to modify custom fields across boards through its custom fields update endpoints, potentially leading to unauthorized data...

CVE-2026-30843

Wekan versions 8.32 and 8.33 contain a critical Insecure Direct Object Reference (IDOR) in custom fields update endpoints, allowing cross-board modification of custom fields. The PUT /api/boards/:boardId/custom-fields/:customFieldId endpoint validates board access but uses the field’s _id as a fi...