CVE-2026-18425

Concrete CMS 9 (versions 9.0.0 through 9.5.2) contains an IDOR flaw in the dashboard sitemap reorder action (SitemapUpdate::updateDisplayOrder). The controller checks only the global access_sitemap task permission and omits any per-page edit permission check, allowing an authenticated user with s...

EUVD-2026-79504

Concrete CMS 9 before 9.5.3 authorized the dashboard sitemap reorder action Concrete\Controller\Backend\Dashboard\SitemapUpdate using only the global accesssitemap task permission and did not check per-page edit permission before updating each page's display order. As a result, an authenticated...

CVE-2026-18425 IDOR in Concrete CMS 9.0.0 through 9.5.2 dashboard sitemap reorder (SitemapUpdate::updateDisplayOrder) allows an authenticated sitemap user to reorder arbitrary pages

Concrete CMS 9 before 9.5.3 authorized the dashboard sitemap reorder action Concrete\Controller\Backend\Dashboard\SitemapUpdate using only the global accesssitemap task permission and did not check per-page edit permission before updating each page's display order. As a result, an authenticated...

CVE-2026-18425 IDOR in Concrete CMS 9.0.0 through 9.5.2 dashboard sitemap reorder (SitemapUpdate::updateDisplayOrder) allows an authenticated sitemap user to reorder arbitrary pages

Concrete CMS 9 before 9.5.3 authorized the dashboard sitemap reorder action Concrete\Controller\Backend\Dashboard\SitemapUpdate using only the global accesssitemap task permission and did not check per-page edit permission before updating each page's display order. As a result, an authenticated...

CVE-2026-18424 Concrete CMS 9.0.0 to 9.5.2 is vulnerable to SSRF protection bypass in remote file import when multiple URLs share a host but use different ports

Concrete CMS 9.0.0 to 9.5.2 is vulnerable to Server-Side Request Forgery iremote file import via cross-port reuse of a host's validated DNS pin. When multiple remote URLs share the same host, only the first ValidatedRemoteUrl is retained and reused for every later URL with that host. A...

EUVD-2026-79503

Concrete CMS 9.0.0 to 9.5.2 is vulnerable to Server-Side Request Forgery iremote file import via cross-port reuse of a host's validated DNS pin. When multiple remote URLs share the same host, only the first ValidatedRemoteUrl is retained and reused for every later URL with that host. A...

CVE-2026-18424

Concrete CMS versions 9.0.0 through 9.5.2 are vulnerable to a Server-Side Request Forgery (SSRF) in the remote file import feature. The root cause is a cross-port reuse of a validated DNS pin : when multiple remote URLs share the same host, only the first ValidatedRemoteUrl is retained and reused...

CVE-2026-18424 Concrete CMS 9.0.0 to 9.5.2 is vulnerable to SSRF protection bypass in remote file import when multiple URLs share a host but use different ports

Concrete CMS 9.0.0 to 9.5.2 is vulnerable to Server-Side Request Forgery iremote file import via cross-port reuse of a host's validated DNS pin. When multiple remote URLs share the same host, only the first ValidatedRemoteUrl is retained and reused for every later URL with that host. A...

CVE-2026-18424 Concrete CMS 9.0.0 to 9.5.2 is vulnerable to SSRF protection bypass in remote file import when multiple URLs share a host but use different ports

Concrete CMS 9.0.0 to 9.5.2 is vulnerable to Server-Side Request Forgery iremote file import via cross-port reuse of a host's validated DNS pin. When multiple remote URLs share the same host, only the first ValidatedRemoteUrl is retained and reused for every later URL with that host. A...

CVE-2026-18423 Concrete CMS 9.0.0 through 9.5.2 is vulnerable to Insecure direct object reference (IDOR) in the Express saved search preset delete and edit dialogs allowing an authenticated user with permission on one Express entity to delete or rename saved search pres

Concrete CMS 9.0.0 through 9.5.2 is vulnerable to Insecure direct object reference IDOR in the Express saved search preset delete and edit dialogs . An authenticated user holding only view permission on a single Express entity could therefore permanently delete, with no undo, or rename saved sear...

CVE-2026-18423 Concrete CMS 9.0.0 through 9.5.2 is vulnerable to Insecure direct object reference (IDOR) in the Express saved search preset delete and edit dialogs allowing an authenticated user with permission on one Express entity to delete or rename saved search pres

Concrete CMS 9.0.0 through 9.5.2 is vulnerable to Insecure direct object reference IDOR in the Express saved search preset delete and edit dialogs . An authenticated user holding only view permission on a single Express entity could therefore permanently delete, with no undo, or rename saved sear...

EUVD-2026-79237

Concrete CMS 9.0.0 through 9.5.2 is vulnerable to Insecure direct object reference IDOR in the Express saved search preset delete and edit dialogs . An authenticated user holding only view permission on a single Express entity could therefore permanently delete, with no undo, or rename saved sear...

CVE-2026-18423

Concrete CMS versions 9.0.0 through 9.5.2 contain an Insecure Direct Object Reference (IDOR) in the Express saved search preset delete and edit dialogs . An authenticated user holding only view permission on a single Express entity can permanently delete (with no undo) or rename saved search pres...

CVE-2026-18423 Concrete CMS 9.0.0 through 9.5.2 is vulnerable to Insecure direct object reference (IDOR) in the Express saved search preset delete and edit dialogs allowing an authenticated user with permission on one Express entity to delete or rename saved search pres

Concrete CMS 9.0.0 through 9.5.2 is vulnerable to Insecure direct object reference IDOR in the Express saved search preset delete and edit dialogs . An authenticated user holding only view permission on a single Express entity could therefore permanently delete, with no undo, or rename saved sear...

CVE-2026-18422 Concrete CMS below 9.5.3 Multilingual Page Assign Action Lacks Destination Authorization and CSRF Token Validation

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...

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-2026-18422 Concrete CMS below 9.5.3 Multilingual Page Assign Action Lacks Destination Authorization and CSRF Token Validation

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-2026-18422 Concrete CMS below 9.5.3 Multilingual Page Assign Action Lacks Destination Authorization and CSRF Token Validation

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-2026-18422

Concrete CMS before 9.5.3 is vulnerable in the multilingual page assignment backend action (Backend\Page\Multilingual::assign), where a destination-side authorization check and a CSRF token validation were both missing. An authenticated user holding only the Edit Page Multilingual Settings permis...

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...