EUVD-2026-79174

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-2026-81924 Concrete CMS below 9.5.3 is vulnerable to Cross-Site Request Forgery (CSRF) in Theme Page Template Activation

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...

EUVD-2026-79294

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-2026-81923 Concrete CMS below 9.5.3 is missing authorization in the SEO Bulk Update Meta Tags editor

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-2026-81923

Concrete CMS versions before 9.5.3 are affected by a missing authorization check in the SEO Bulk Update Meta Tags editor . The saveRecord() action validated the per-page CSRF token but never called canEditPageProperties(), allowing a user with access to the bulk SEO tool and view-only permission ...

CVE-2026-81923 Concrete CMS below 9.5.3 is missing authorization in the SEO Bulk Update Meta Tags editor

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-2026-81923 Concrete CMS below 9.5.3 is missing authorization in the SEO Bulk Update Meta Tags editor

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-2026-81922

Concrete CMS before 9.5.3 contains a missing authorization flaw in the sitemap Explore dashboard controller . The send_to_top and send_to_bottom reorder actions performed only a generic sitemap-access check before loading a page via the attacker-controlled cNodeID parameter and altering its displ...

EUVD-2026-79292

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-2026-81922 "In Concrete CMS below 9.5.3, there is Missing authorization in the sitemap page reorder allowing low-privilege users to reorder arbitrary pages "

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-2026-81922 "In Concrete CMS below 9.5.3, there is Missing authorization in the sitemap page reorder allowing low-privilege users to reorder arbitrary pages "

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-2026-81922 "In Concrete CMS below 9.5.3, there is Missing authorization in the sitemap page reorder allowing low-privilege users to reorder arbitrary pages "

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-2026-81921

Concrete CMS versions 8.5.3 through 9.5.2 are affected by an OAuth 2.0 refresh-token grant flaw. The unmodified upstream League grant issued new access tokens from a valid refresh token without re-checking the associated account's active status . Consequently, a user who obtained a refresh token ...

EUVD-2026-79287

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-2026-81921 In Concrete CMS 8.5.3 to 9,5,2, OAuth 2.0 Refresh-Token Grant Bypasses Account Status

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-2026-81921 In Concrete CMS 8.5.3 to 9,5,2, OAuth 2.0 Refresh-Token Grant Bypasses Account Status

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-2026-81921 In Concrete CMS 8.5.3 to 9,5,2, OAuth 2.0 Refresh-Token Grant Bypasses Account Status

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-2026-81920

Concrete CMS below 9.5.3 is vulnerable to Cross-Site Request Forgery (CSRF) in the dashboard SEO Excluded Words page. The reset() controller action cleared the administrator-configured reserved-word list (concrete.seo.exclude_words) without validating the anti-CSRF token or restricting the reques...

CVE-2026-81920 Concrete CMS below 9.5.3 is vulnerable to Cross-Site Request Forgery (CSRF) in Dashboard SEO Excluded Words Reset Endpoint

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-2026-81920 Concrete CMS below 9.5.3 is vulnerable to Cross-Site Request Forgery (CSRF) in Dashboard SEO Excluded Words Reset Endpoint

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 ...