CVE-2026-68534

Concrete CMS before 9.5.3 contained a stored cross-site scripting (XSS) vulnerability caused by Express entry labels being rendered as raw HTML in association selectors. An unauthenticated attacker could submit a malicious payload through a public Express Form, which would then execute in an admi...

CVE-2026-81919 Concrete CMS below 9.5.3 is vulnerable to Cross-Site Request Forgery (CSRF) in Block Arrangement Endpoint

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-2026-81919

Concrete CMS below 9.5.3 is vulnerable to Cross-Site Request Forgery (CSRF) in the block-arrangement backend endpoint (the arrange() action of Concrete\Controller\Backend\Page\ArrangeBlocks). The action enforced page-edit authorization but performed no CSRF token check , and its route accepted an...

CVE-2026-81919 Concrete CMS below 9.5.3 is vulnerable to Cross-Site Request Forgery (CSRF) in Block Arrangement Endpoint

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...

EUVD-2026-79142

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-2026-81899

Concrete CMS 9.0.0 to 9.5.2 stored group folder names without sanitization and printed them unescaped on the Members Groups dashboard page, resulting in stored cross-site scripting. The add and edit group-folder handlers stored the submitted folder name without neutralizing HTML, and the group...

CVE-2026-81898

In Concrete CMS below version 9.5.3, the Address attribute's country-less text formatter skipped HTML-escaping, enabling stored XSS in Express association views. A user able to submit an Address attribute could execute script in the session of any dashboard user who opened the affected entry. The...

CVE-2026-18113

In Concrete CMS 9.0 to 9.5.2, the Top Navigation Bar block did not HTML-escape dropdown child page names before writing them into the page, so a user who could create or rename pages could store a script through a child page name and have it run in the browser of any visitor, editor, or...

CVE-2026-18115

Concrete CMS 9.2.0 to 9.5.2 did not enforce per-field edituserproperties permissions on the REST API user write endpoints PUT /ccm/api/1.0/users/uID and POST /ccm/api/1.0/users/uID/changepassword. A user with an update-scoped OAuth token and permission to edit only one non-sensitive field could...

EUVD-2026-79127

Concrete CMS 9.0.0 to 9.5.2 stored group folder names without sanitization and printed them unescaped on the Members Groups dashboard page, resulting in stored cross-site scripting. The add and edit group-folder handlers stored the submitted folder name without neutralizing HTML, and the group...

CVE-2026-81899 Concrete CMS 9.0 to 9.5.2 is vulnerable to Stored XSS via group folder name on the Members > Groups dashboard

Concrete CMS 9.0.0 to 9.5.2 stored group folder names without sanitization and printed them unescaped on the Members Groups dashboard page, resulting in stored cross-site scripting. The add and edit group-folder handlers stored the submitted folder name without neutralizing HTML, and the group...

CVE-2026-81899

Concrete CMS versions 9.0.0 through 9.5.2 are affected by a stored cross-site scripting (XSS) vulnerability in the group folder name handling. The add and edit group-folder handlers stored submitted folder names without sanitizing HTML, and the group search grid returned them without output encod...

CVE-2026-18115

Concrete CMS versions 9.2.0 through 9.5.2 fail to enforce per-field edit_user_properties permissions on the REST API user write endpoints (PUT /ccm/api/1.0/users/{uID} and POST /ccm/api/1.0/users/{uID}/change_password). An authenticated user holding an update-scoped OAuth token and permission to ...

EUVD-2026-78913

Concrete CMS 9.2.0 to 9.5.2 did not enforce per-field edituserproperties permissions on the REST API user write endpoints PUT /ccm/api/1.0/users/uID and POST /ccm/api/1.0/users/uID/changepassword. A user with an update-scoped OAuth token and permission to edit only one non-sensitive field could...

CVE-2026-18115 In Concrete CMS 9.2.0 to 9.5.2, Missing Authorization in REST API Users update() and change_password Enables Account Takeover.

Concrete CMS 9.2.0 to 9.5.2 did not enforce per-field edituserproperties permissions on the REST API user write endpoints PUT /ccm/api/1.0/users/uID and POST /ccm/api/1.0/users/uID/changepassword. A user with an update-scoped OAuth token and permission to edit only one non-sensitive field could...

CVE-2026-18113 Concrete CMS 9.0 to 9.5.2 is vulnerable to Stored XSS in the Top Navigation Bar Block via Dropdown Child Page Names

In Concrete CMS 9.0 to 9.5.2, the Top Navigation Bar block did not HTML-escape dropdown child page names before writing them into the page, so a user who could create or rename pages could store a script through a child page name and have it run in the browser of any visitor, editor, or...

EUVD-2026-78904

In Concrete CMS 9.0 to 9.5.2, the Top Navigation Bar block did not HTML-escape dropdown child page names before writing them into the page, so a user who could create or rename pages could store a script through a child page name and have it run in the browser of any visitor, editor, or...

CVE-2026-18113

Concrete CMS 9.0 through 9.5.2 is affected by a stored cross-site scripting (XSS) vulnerability in the Top Navigation Bar block . The block failed to HTML-escape dropdown child page names before rendering them into the page, allowing a user with page-creation or renaming privileges to inject a sc...

CVE-2026-18113 Concrete CMS 9.0 to 9.5.2 is vulnerable to Stored XSS in the Top Navigation Bar Block via Dropdown Child Page Names

In Concrete CMS 9.0 to 9.5.2, the Top Navigation Bar block did not HTML-escape dropdown child page names before writing them into the page, so a user who could create or rename pages could store a script through a child page name and have it run in the browser of any visitor, editor, or...

CVE-2026-81898 Concrete CMS below version 9.5.3 is vulnerable to Stored XSS via country-less Address attribute in Express association views

In Concrete CMS below version 9.5.3, the Address attribute's country-less text formatter skipped HTML-escaping, enabling stored XSS in Express association views. A user able to submit an Address attribute could execute script in the session of any dashboard user who opened the affected entry. The...