CVE-2026-18426 Concrete CMS 9.0.0 to 9.5.2 Express Form block missing authorization allows an authenticated editor to modify Express Forms they cannot edit

Concrete CMS 9.0.0 through 9.5.2 did not enforce a block-level edit-permission check on the Express Form block's control-management actions, which relied solely on CSRF token validation. Because the token is bound to the user and action rather than to a specific block, page, or form, an...

CVE-2026-18426

Concrete CMS versions 9.0.0 through 9.5.2 contained an authorization flaw in the Express Form block 's control-management actions. The actions relied solely on CSRF token validation rather than a block-level edit-permission check. Because the token is bound to the user and action—not to a specifi...

CVE-2026-18426 Concrete CMS 9.0.0 to 9.5.2 Express Form block missing authorization allows an authenticated editor to modify Express Forms they cannot edit

Concrete CMS 9.0.0 through 9.5.2 did not enforce a block-level edit-permission check on the Express Form block's control-management actions, which relied solely on CSRF token validation. Because the token is bound to the user and action rather than to a specific block, page, or form, an...

CVE-2026-18422

Concrete CMS before 9.5.3 contained a vulnerability in the multilingual page assignment backend action (Backend\Page\Multilingual::assign). The action lacked a destination-side authorization check and did not validate a CSRF token . An authenticated user holding only the "Edit Page Multilingual S...

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'...

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'...

CVE-2026-18421

Concrete CMS versions 9 through 9.5.2 contain a missing authorization check in the Boards data source dashboard controller . The three affected actions (update , update_data_source , and delete_data_source ) resolve a ConfiguredDataSource directly from an attacker-supplied identifier without conf...

EUVD-2026-79184

Concrete CMS 9.0.0 through 9.5.2 was missing an authorization check on the Express entries advanced-search dashboard action. The advancedsearch method in DashboardSelectableExpressEntryListTrait resolved an Express entity directly from a user-supplied entity ID and rendered that entity's entries...

CVE-2026-68529

Concrete CMS 9.0.0 through 9.5.2 contained an authorization bypass in the Express entries advanced-search dashboard action. The advanced_search() method in DashboardSelectableExpressEntryListTrait resolved an Express entity from a user-supplied entity ID without invoking canViewExpressEntries(), ...

CVE-2026-68529 Concrete CMS 9.0.0 through 9.5.2 us missing authorization in the Express entries advanced-search dashboard action allowing a low-privileged user to read other entities' Express entries

Concrete CMS 9.0.0 through 9.5.2 was missing an authorization check on the Express entries advanced-search dashboard action. The advancedsearch method in DashboardSelectableExpressEntryListTrait resolved an Express entity directly from a user-supplied entity ID and rendered that entity's entries...

CVE-2026-68529 Concrete CMS 9.0.0 through 9.5.2 us missing authorization in the Express entries advanced-search dashboard action allowing a low-privileged user to read other entities' Express entries

Concrete CMS 9.0.0 through 9.5.2 was missing an authorization check on the Express entries advanced-search dashboard action. The advancedsearch method in DashboardSelectableExpressEntryListTrait resolved an Express entity directly from a user-supplied entity ID and rendered that entity's entries...

CVE-2026-68530 Concrete CMS 9.0.0 through 9.5.2 is Missing Authorization on Board Instance Actions Allowed a Board Editor to Access and Delete Other Boards' Instances

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-2026-68530

Concrete CMS versions 9.0.0 through 9.5.2 contain an authorization bypass in the Boards area of the Dashboard. The instance-details single-page controller resolved a board instance directly from an attacker-supplied ID and performed view, refresh, regenerate, or delete actions without verifying t...

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-2026-68530 Concrete CMS 9.0.0 through 9.5.2 is Missing Authorization on Board Instance Actions Allowed a Board Editor to Access and Delete Other Boards' Instances

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-2026-81923 Concrete CMS below 9.5.3 is missing authorization in the SEO Bulk Update Meta Tags editor

In Concrete CMS before 9.5.3, the SEO Bulk Update Meta Tags editor did not check per-page edit permissions before saving. The saveRecord action validated the per-page CSRF token but never called canEditPageProperties for the target page, so a user who was granted access to the bulk SEO tool and...

CVE-2026-81923

Concrete CMS versions before 9.5.3 are affected by a missing authorization check in the SEO Bulk Update Meta Tags editor . The saveRecord() action validated the per-page CSRF token but never called canEditPageProperties(), allowing a user with access to the bulk SEO tool and view-only permission ...

CVE-2026-81923 Concrete CMS below 9.5.3 is missing authorization in the SEO Bulk Update Meta Tags editor

In Concrete CMS before 9.5.3, the SEO Bulk Update Meta Tags editor did not check per-page edit permissions before saving. The saveRecord action validated the per-page CSRF token but never called canEditPageProperties for the target page, so a user who was granted access to the bulk SEO tool and...

CVE-2026-81922

Concrete CMS before 9.5.3 contains a missing authorization flaw in the sitemap Explore dashboard controller . The send_to_top and send_to_bottom reorder actions performed only a generic sitemap-access check before loading a page via the attacker-controlled cNodeID parameter and altering its displ...