CVE-2026-81911

Concrete CMS versions 9.0.0 to 9.5.2 is vulnerable to Stored XSS in Board Custom Slot dialog. The customslot savetemplate endpoint authorizes the request only against the target board instance canEditBoardContents and then persists the client-supplied selectedTemplateOptioncollection verbatim,...

CVE-2026-68526

Concrete CMS before 9.5.3 did not validate an anti-CSRF token in the Calendar event duplicate dialog controller concrete/controllers/dialog/event/duplicate.php submit action, which duplicated a calendar event after checking only canAccess and the per-resource canAddCalendarEvent permission, so a...

CVE-2026-53952

GetSimple CMS is a content management system CMS, and GetSimple CMS CE is the community edition of that CMS. A logic flaw in GetSimple CMS v3.4.0a and below and GetSimpleCMS-CE v3.3.22 and below allows unauthenticated attackers to create a new administrator account. The application features an...

CVE-2026-81917 Concrete CMS below 9.5.3 is vulnerable to Stored XSS in the Document Library block file description and tags

Concrete CMS below 9.5.3 does not apply HTML output escaping to the file description and tags fields when rendering the Document Library block, so a user with permission to edit file properties could store a script payload that executed in the browser of any visitor to a page displaying the block...

CVE-2026-81917 Concrete CMS below 9.5.3 is vulnerable to Stored XSS in the Document Library block file description and tags

Concrete CMS below 9.5.3 does not apply HTML output escaping to the file description and tags fields when rendering the Document Library block, so a user with permission to edit file properties could store a script payload that executed in the browser of any visitor to a page displaying the block...

EUVD-2026-76689

Concrete CMS below 9.5.3 does not apply HTML output escaping to the file description and tags fields when rendering the Document Library block, so a user with permission to edit file properties could store a script payload that executed in the browser of any visitor to a page displaying the block...

CVE-2026-81917 Concrete CMS below 9.5.3 is vulnerable to Stored XSS in the Document Library block file description and tags

Concrete CMS below 9.5.3 does not apply HTML output escaping to the file description and tags fields when rendering the Document Library block, so a user with permission to edit file properties could store a script payload that executed in the browser of any visitor to a page displaying the block...

CVE-2026-81917

Concrete CMS versions below 9.5.3 contain a Stored XSS vulnerability in the Document Library block . The block controller returned the file description and tags values without applying the h() HTML-escaping function (already used for the title column), and the block view template wrote those valu...

EUVD-2026-76688

Concrete CMS Area API's block-create endpoint in versions 9.2.0 to 9.5.2 did not invoke the block type controller's validate method on submitted data, which, for file-referencing blocks such as heroimage and gallery, is where the referenced file is authorized against the user's file-manager...

CVE-2026-68535

Concrete CMS versions 9.2.0 through 9.5.2 are affected by a missing authorization check in the Area REST API block-create endpoint. The endpoint failed to invoke the block type controller's validate() method, which is responsible for authorizing referenced files against the user's file-manager vi...

CVE-2026-68535 Concrete CMS 9.2.0 to 9.5.2 is vulnerable to Missing authorization in the Concrete CMS Area REST API block-create path letting an editor reference files outside their file-manager permissions

Concrete CMS Area API's block-create endpoint in versions 9.2.0 to 9.5.2 did not invoke the block type controller's validate method on submitted data, which, for file-referencing blocks such as heroimage and gallery, is where the referenced file is authorized against the user's file-manager...

CVE-2026-68535 Concrete CMS 9.2.0 to 9.5.2 is vulnerable to Missing authorization in the Concrete CMS Area REST API block-create path letting an editor reference files outside their file-manager permissions

Concrete CMS Area API's block-create endpoint in versions 9.2.0 to 9.5.2 did not invoke the block type controller's validate method on submitted data, which, for file-referencing blocks such as heroimage and gallery, is where the referenced file is authorized against the user's file-manager...

CVE-2026-68535 Concrete CMS 9.2.0 to 9.5.2 is vulnerable to Missing authorization in the Concrete CMS Area REST API block-create path letting an editor reference files outside their file-manager permissions

Concrete CMS Area API's block-create endpoint in versions 9.2.0 to 9.5.2 did not invoke the block type controller's validate method on submitted data, which, for file-referencing blocks such as heroimage and gallery, is where the referenced file is authorized against the user's file-manager...

CVE-2026-81916 Incorrect Authorization in the Concrete CMS Express Entries Dashboard below version 9.5.3 Allows Entry Creation in an Unauthorized Object

Concrete CMS before 9.5.3 evaluated the authorization check for an Express entry submission against the entity of the posted form rather than the entity identified by the dashboard route. As a result, a user permitted to add entries to one Express object could create entries in a different Expres...

CVE-2026-81916 Incorrect Authorization in the Concrete CMS Express Entries Dashboard below version 9.5.3 Allows Entry Creation in an Unauthorized Object

Concrete CMS before 9.5.3 evaluated the authorization check for an Express entry submission against the entity of the posted form rather than the entity identified by the dashboard route. As a result, a user permitted to add entries to one Express object could create entries in a different Expres...

EUVD-2026-76687

Concrete CMS before 9.5.3 evaluated the authorization check for an Express entry submission against the entity of the posted form rather than the entity identified by the dashboard route. As a result, a user permitted to add entries to one Express object could create entries in a different Expres...

CVE-2026-81916 Incorrect Authorization in the Concrete CMS Express Entries Dashboard below version 9.5.3 Allows Entry Creation in an Unauthorized Object

Concrete CMS before 9.5.3 evaluated the authorization check for an Express entry submission against the entity of the posted form rather than the entity identified by the dashboard route. As a result, a user permitted to add entries to one Express object could create entries in a different Expres...

CVE-2026-81916

Concrete CMS before 9.5.3 contains an authorization bypass in the Express entry submission flow. The dashboard submit route resolved the target entity from an attacker-controlled route ID, while the permission check validated the independently posted form's entity — the two were never compared. A...

CVE-2026-81915

Concrete CMS below 9.5.3 has a missing object-level authorization check in the Types::submit() dashboard controller. When updating a Page Type, the controller loaded and saved the Page Type identified by a user-supplied ptID without calling canEditPageType(), allowing a signed-in dashboard user a...

EUVD-2026-76249

Concrete CMS below 9.5.3 does not perform an object-level authorization check when a Page Type was updated. The Types::submit dashboard controller loaded and saved the Page Type identified by a user-supplied ptID without calling canEditPageType, so a signed-in dashboard user permitted to edit one...