CVE-2026-8411

CVE-2026-8411 affects Concrete CMS 9.0.0–9.4.x, with CSRF at the endpoint concrete/controllers/dialog/page/bulk/delete. The issue is confirmed across multiple sources and is fixed in 9.5.0+. Exploitation requires user interaction and is scoped as a low CVSS 4.0 vector (AV:N/AC:L/AT:P/PR:N/UI:P/VC...

CVE-2026-8411 Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/dialog/page/bulk/delete

Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery CSRF at concrete/controllers/dialog/page/bulk/delete. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Yonata...

CVE-2026-8412

Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery CSRF at concrete/controllers/dialog/page/bulk/cache. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Yonatan...

CVE-2026-8412 Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/dialog/page/bulk/cache

Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery CSRF at concrete/controllers/dialog/page/bulk/cache. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Yonatan...

CVE-2026-8412 Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/dialog/page/bulk/cache

Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery CSRF at concrete/controllers/dialog/page/bulk/cache. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Yonatan...

GHSA-46XH-7854-F568 Concrete CMS is vulnerable to authorization bypass in the Calendar Block

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...

GHSA-PRXR-VJGC-2CQ9 Concrete CMS is Vulnerable to Cross-Site Request Forgery

Concrete CMS 9.5.0 and below emits a CSRF token in the localavailableupdate.php view $token-output'doupdate' but the corresponding doupdate method in concrete/controllers/singlepage/dashboard/system/update/update.php never calls $this-token-validate'doupdate'. The form is rendered as a POST form,...

Concrete CMS has Stored XSS through its height parameter

Concrete CMS 9.5.0 and below has Stored XSS on the height parameter. The controller does not validate or sanitize $height. Any user with editor privileges can inject malicious JavaScript that executes in the context of any visitor's browser, potentially leading to session hijacking, credential...

GHSA-5RJ5-GFMR-HRC3 Concrete CMS does not validate a CSRF token before processing requests to `/dashboard/extend/update/prepare_remote_upgrade/<remoteMPID>`

Concrete CMS 9.5.0 and below does not validate a CSRF token before processing requests to /dashboard/extend/update/prepareremoteupgrade/. An attacker who controls the remote package returned for a known marketplace item ID can overwrite the package PHP on disk and force its upgrade method to...

Cross-site Request Forgery (CSRF)

Overview concrete5/concrete5 is a concrete5 open source CMS. Affected versions of this package are vulnerable to Cross-site Request Forgery CSRF via the installpackage function in concrete/controllers/singlepage/dashboard/extend/install.php. An attacker can execute arbitrary code by tricking an...

CVE-2026-8413

Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery CSRF at concrete/controllers/dialog/page/bulk/design. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Yonata...

CVE-2026-8414 Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/dialog/event/duplicate

Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery CSRF at concrete/controllers/dialog/event/duplicate. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Yonatan...

CVE-2026-8414 Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/dialog/event/duplicate

Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery CSRF at concrete/controllers/dialog/event/duplicate. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Yonatan...

CVE-2026-8415 Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/dialog/express/association/reorder

Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery CSRF at concrete/controllers/dialog/express/association/reorder. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N...

CVE-2026-8415 Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/dialog/express/association/reorder

Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery CSRF at concrete/controllers/dialog/express/association/reorder. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N...

CVE-2026-8416

Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery CSRF at concrete/controllers/backend/file addFavoriteFolder$id. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N...

CVE-2026-8416

Concrete CMS versions 9.0.0 through 9.4.x are vulnerable to Cross Site Request Forgery (CSRF) in the concrete/controllers/backend/file addFavoriteFolder($id) function. The issue stems from CSRF protection gaps in that endpoint. Public disclosures in multiple sources (including PT-2026-42572) conf...

CVE-2026-8432

Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery CSRF at concrete/controllers/backend/file star. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Yonatan Dror...

CVE-2026-8432

Concrete CMS versions prior to 9.5.0 are affected by a Cross-Site Request Forgery (CSRF) at the endpoint concrete/controllers/backend/file star(), due to a flaw in the star() function. Affected range includes 9.0.0 through 9.4.x. The issue is exploited by convincing an authenticated user to perfo...

CVE-2026-8433

Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery CSRF at concrete/controllers/backend/file rescan. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Yonatan...