CVE-2026-7882

Concrete CMS 9.5.0 and below is vulnerable to unauthorized file deletion due to an Inverted CSRF token check in the DeleteFile controller. The code throws an error when the token IS valid and proceeds with file deletion when the token is invalid or missing. This effectively disables CSRF protecti...

SQLAdmin: Authorization Bypass on `ajax_lookup`

Impact The ajaxlookup endpoint in application.py bypasses the isaccessible access control check that all other endpoints enforce. If a developer restricts model access by overriding isaccessible, an authenticated user can still query that model's data through the ajaxlookup endpoint — silently...

GHSA-54MC-GGHV-4CFJ SQLAdmin: Authorization Bypass on `ajax_lookup`

Impact The ajaxlookup endpoint in application.py bypasses the isaccessible access control check that all other endpoints enforce. If a developer restricts model access by overriding isaccessible, an authenticated user can still query that model's data through the ajaxlookup endpoint — silently...

Twig: Arbitrary PHP code execution via `_self.(<string>)` macro-reference compilation

Description The obj.expr dynamic-attribute syntax added in 3.15.0 as the replacement for the deprecated attribute function lets the attribute be an arbitrary expression. When the receiver is self or any % import % alias and the parenthesised expression is a string literal, DotExpressionParser...

Information Exposure

Overview concrete5/concrete5 is a concrete5 open source CMS. Affected versions of this package are vulnerable to Information Exposure via a missing permission check in the usage controller. An attacker can access sensitive information about file usage, including page IDs, handles, and full URLs o...

GHSA-4G7Q-44QP-CC5C Concrete CMS is vulnerable to unauthenticated file usage disclosure

Concrete CMS 9.5.0 and below is vulnerable to unauthenticated file usage disclosure via missing permission check in the usage controller. Any unauthenticated visitor can request /ccm/system/dialogs/file/usage/fID with any file ID and receive a list of every page that references that file,...

GHSA-7FXW-R6JV-74C8 Twig: `{% sandbox %}{% include %}` skips checkSecurity() on cached templates (incomplete fix for CVE-2024-45411)

Description The fix for CVE-2024-45411 / GHSA-6j75-5wfj-gh66 added an explicit $loaded-unwrap-checkSecurity call in CoreExtension::include so that a template already cached in Environment::$loadedTemplates is re-checked when included with sandboxed = true. The deprecated but still functional %...

Twig: `{% sandbox %}{% include %}` skips checkSecurity() on cached templates (incomplete fix for CVE-2024-45411)

Description The fix for CVE-2024-45411 / GHSA-6j75-5wfj-gh66 added an explicit $loaded-unwrap-checkSecurity call in CoreExtension::include so that a template already cached in Environment::$loadedTemplates is re-checked when included with sandboxed = true. The deprecated but still functional %...

CVE-2026-7886 Concrete CMS 9.5.0 and below is vulnerable to IDOR in AddMessage/UpdateMessage via attachments[] parameter

Concrete CMS 9.5.0 and below is vulnerable to IDOR in AddMessage/UpdateMessage via attachments parameter which can lead to file permission bypass. The AddMessage and UpdateMessage conversation controllers accept user-supplied file attachment IDs and load files directly via $em-findFile::class,...

CVE-2026-7882

Summary: Concrete CMS 9.5.0 and earlier is vulnerable to unauthorized file deletion due to an inverted CSRF token check in the DeleteFile controller. The code treats a valid token as an error and proceeds with deletion when the token is invalid or missing, effectively disabling CSRF protection fo...

CVE-2026-7882 Concrete CMS 9.5.0 and below is vulnerable to CSRF via the DeleteFile controller

Concrete CMS 9.5.0 and below is vulnerable to unauthorized file deletion due to an Inverted CSRF token check in the DeleteFile controller. The code throws an error when the token IS valid and proceeds with file deletion when the token is invalid or missing. This effectively disables CSRF protecti...

CVE-2026-7882 Concrete CMS 9.5.0 and below is vulnerable to CSRF via the DeleteFile controller

Concrete CMS 9.5.0 and below is vulnerable to unauthorized file deletion due to an Inverted CSRF token check in the DeleteFile controller. The code throws an error when the token IS valid and proceeds with file deletion when the token is invalid or missing. This effectively disables CSRF protecti...

CVE-2026-7882

Concrete CMS 9.5.0 and below is vulnerable to unauthorized file deletion due to an Inverted CSRF token check in the DeleteFile controller. The code throws an error when the token IS valid and proceeds with file deletion when the token is invalid or missing. This effectively disables CSRF protecti...

CVE-2026-7879

Concrete CMS 9.5.0 and earlier is affected by a vulnerability in submit_password() within concrete/controllers/single_page/download_file.php that permits unauthorized access to files. The issue arises because downloading permission-restricted files bypasses the view_file permission check; files w...

CVE-2026-8205

Concrete CMS 9.5.0 and below is vulnerable to authorization bypass in the Calendar Block since actiongetevents does not check canView on the calendar which results in restricted event details being disclosed. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 6.3 with...

CVE-2026-6826 Concrete 9.5.0 and below has file usage disclosure via missing permission check in Usage controller

Concrete CMS 9.5.0 and below is vulnerable to unauthenticated file usage disclosure via missing permission check in the usage controller. Any unauthenticated visitor can request /ccm/system/dialogs/file/usage/fID with any file ID and receive a list of every page that references that file,...

CVE-2026-6826

Concrete CMS 9.5.0 and below is vulnerable to unauthenticated file usage disclosure via missing permission check in the usage controller. Any unauthenticated visitor can request /ccm/system/dialogs/file/usage/fID with any file ID and receive a list of every page that references that file,...

CVE-2026-6826

Concrete CMS 9.5.0 and below is vulnerable to unauthenticated file usage disclosure due to a missing permission check in the usage controller. An unauthenticated visitor can access /ccm/system/dialogs/file/usage/{fID} with any file ID and obtain a list of every page referencing that file, includi...

CVE-2026-6826 Concrete 9.5.0 and below has file usage disclosure via missing permission check in Usage controller

Concrete CMS 9.5.0 and below is vulnerable to unauthenticated file usage disclosure via missing permission check in the usage controller. Any unauthenticated visitor can request /ccm/system/dialogs/file/usage/fID with any file ID and receive a list of every page that references that file,...

CVE-2026-6826 Concrete 9.5.0 and below has file usage disclosure via missing permission check in Usage controller

Concrete CMS 9.5.0 and below is vulnerable to unauthenticated file usage disclosure via missing permission check in the usage controller. Any unauthenticated visitor can request /ccm/system/dialogs/file/usage/fID with any file ID and receive a list of every page that references that file,...