EUVD-2026-79235

Concrete CMS before 9.5.3 did not enforce a destination-side authorization check and did not validate a CSRF token in the multilingual page assignment backend action Backend\Page\Multilingual::assign. As a result, an authenticated user who held the Edit Page Multilingual Settings permission on a...

CVE-2026-81920

Concrete CMS below 9.5.3 was vulnerable to Cross-Site Request Forgery in the dashboard SEO Excluded Words page. The reset controller action cleared the administrator-configured reserved-word list concrete.seo.excludewords but did not validate the anti-CSRF token that the reset modal emitted, and ...

CVE-2026-81922

Concrete CMS before 9.5.3 did not enforce a per-page authorization check when reordering pages from the sitemap. In the sitemap Explore dashboard controller, the sendtotop and sendtobottom reorder tasks ran after only a generic sitemap-access check; the controller loaded the page named by the...

CVE-2026-81923

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-2026-81924

Concrete CMS before 9.5.3 is vulnerable to Cross-Site Request Forgery CSRF in the theme page-template activation feature. The Dashboard theme Inspect controller's activatefiles action created PageTemplate records from attacker-supplied pageTemplates values without validating an anti-CSRF token.A...

CVE-2026-81919

Concrete CMS below 9.5.3 did not validate an anti-CSRF token on the block-arrangement backend endpoint the arrange action of Concrete\Controller\Backend\Page\ArrangeBlocks. The action enforced page-edit authorization but performed no token check, and its route accepted any HTTP method, so an...

CVE-2026-81921

Concrete CMS 8.5.3 through 9.5.2 enabled the OAuth 2.0 refresh-token grant using the unmodified upstream League grant, which issued new access tokens from a valid refresh token without re-checking the associated account's active status. A user who obtained a refresh token while active could...

CVE-2026-68532

Concrete CMS 9.0.0 to dashboard group type controller did not validate a CSRF token on its delete action, resulting in cross-site request forgery. A remote unauthenticated attacker could cause an authenticated user with group type management permission to delete a custom group type. The Concrete...

CVE-2026-68533

Concrete CMS below 9.5.3 conversation attachment uploaded endpoint imported files into the file manager before evaluating the "Add Message Attachments" permission, which was only checked after the file had been stored. A user denied that permission, or an unauthenticated visitor on a guest-postin...

CVE-2026-68534

Concrete CMS before 9.5.3 rendered Express entry labels as raw HTML when displaying associated entries, resulting in stored cross-site scripting. An unauthenticated attacker could submit a payload through a public Express Form; it then executed in an administrator's dashboard session when the...

CVE-2026-68529

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 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-2026-68531

Concrete CMS 9 before 9.5.3 did not escape SQL LIKE wildcard characters in the keyword search filters used by the file manager, file folders, and page list, allowing an authenticated user with editor-level or higher privileges to submit a crafted search containing many single-character wildcards...

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...

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 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-2026-79187

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-2026-68529 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...