CVE-2026-8238

Concrete CMS 9.5.0 and below is vulnerable to IDOR. The '/ccm/frontend/conversations/messagepage' endpoint returns the full content of any conversation message. An unauthenticated attacker can enumerate all conversation messages, including messages from restricted pages, member-only areas, and th...

CVE-2026-7888

Concrete CMS below 9.5.2 is vulnerable to PHP Object Injection via unserialize calls in the Workflow, Form block, and File/Set components that lack the allowedclasses restriction. An unauthenticated attacker may trigger arbitrary PHP object instantiation if a malicious serialized payload has been...

GHSA-XJ25-753J-WGP9 Concrete CMS 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...

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...

Concrete CMS is vulnerable to authorization bypass in the Calendar Event Frontend Dialog

Concrete CMS 9.5.0 and below is vulnerable to authorization Bypass in the Calendar Event Frontend Dialog which can allow cross-calendar data disclosure. A public calendar block can be used as a pivot point to access private calendar data...

CVE-2026-8433 Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/backend/file rescan()

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...

CVE-2026-8204 Concrete CMS 9.5.0 and below is vulnerable to Authorization Bypass in the Calendar Event Frontend Dialog

Concrete CMS 9.5.0 and below is vulnerable to authorization Bypass in the Calendar Event Frontend Dialog which can allow cross-calendar data disclosure. A public calendar block can be used as a pivot point to access private calendar data. The Concrete CMS security team gave this vulnerability a...

CVE-2026-8204 Concrete CMS 9.5.0 and below is vulnerable to Authorization Bypass in the Calendar Event Frontend Dialog

Concrete CMS 9.5.0 and below is vulnerable to authorization Bypass in the Calendar Event Frontend Dialog which can allow cross-calendar data disclosure. A public calendar block can be used as a pivot point to access private calendar data. The Concrete CMS security team gave this vulnerability a...

Concrete CMS 跨站请求伪造漏洞

Concrete CMS is an open-source content management system developed by Concrete CMS. Versions of Concrete CMS prior to 9.5.0 had a cross-site request forgeing vulnerability. This vulnerability was exploited through the concrete/controllers/backend/file rescanMultiple function, making it susceptibl...

Concrete CMS has a stored Cross-site Scripting (XSS) vulnerability

In Concrete CMS below version 9.4.8, a user with permission to edit a page with element Legacy form can perform a stored XSS attack towards high-privilege accounts via the Question field. The Concrete CMS security team thanks minhnn42, namdi and quanlna2 from VCSLab-Viettel Cyber Security for...

PortlandLabs Concrete CMS 跨站脚本漏洞

PortlandLabs Concrete CMS is a team-oriented open source content management system from PortlandLabs, Inc. in the United States. A cross-site scripting vulnerability exists in PortlandLabs Concrete CMS versions prior to 9.1. An attacker can exploit this vulnerability to perform cross-site scripti...

CVE-2022-30118

Title for CVE: XSS in /dashboard/system/express/entities/forms/savecontrol/GUID: old browsers only.Description: When using Internet Explorer with the XSS protection disabled, editing a form control in an express entities form for Concrete 8.5.7 and below as well as Concrete 9.0 through 9.0.2 can...