Concrete CMS Cross-Site Request Forgery Vulnerability

Concrete CMS is an open-source content management system developed by Concrete CMS. Versions of Concrete CMS 9.5.0 and earlier had a cross-site request forgeing vulnerability. This vulnerability stemmed from the lack of validation of CSRF tokens, which could allow attackers to overwrite PHP files...

PT-2026-42548

Concrete CMS 9.5.0 and below does not validate a CSRF token before processing requests to /dashboard/extend/update/prepare remote upgrade/. 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...

Concrete CMS Cross-Site Request Forgery Vulnerability

Concrete CMS is an open-source content management system developed by Concrete CMS. Versions prior to Concrete CMS 9.5.0 had a cross-site request forgeing vulnerability, which was exploited through the concrete/controllers/dialog/event/duplicate module...

CVE-2026-8415: Cross-Site Request Forgery (CSRF)

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...

PT-2026-42571

Name of the Vulnerable Software and Affected Versions Concrete CMS versions 9.0.0 through 9.4.x Description Cross Site Request Forgery CSRF occurs at the 'concrete/controllers/dialog/express/association/reorder' endpoint. CSRF is a type of attack that tricks a victim into submitting a malicious...

PT-2026-42560

Name of the Vulnerable Software and Affected Versions Concrete CMS versions prior to 9.5.1 Description An Insecure Direct Object Reference IDOR exists where the '/ccm/frontend/conversations/message page' endpoint returns the full content of any conversation message. This allows an unauthenticated...

PT-2026-42553

Name of the Vulnerable Software and Affected Versions Concrete CMS versions 9.5.0 and earlier Description The submit password method in 'concrete/controllers/single page/download file.php' allows unauthorized file access because the process for downloading permission-restricted files bypasses the...

Concrete CMS security vulnerabilities

Concrete CMS is an open-source content management system designed for teams. Concrete CMS versions 9.5.0 and earlier have security vulnerabilities, which stem from IDOR. These vulnerabilities could allow unauthorized attackers to submit restricted survey options through public survey endpoints...

PT-2026-42581

Name of the Vulnerable Software and Affected Versions Concrete CMS versions prior to 9.5.1 Description Stored Cross-Site Scripting XSS occurs via the 'external-link' page cvName because the updateCollectionAliasExternal function bypasses sanitization. Stored XSS is a flaw where malicious scripts...

Concrete CMS Cross-Site Request Forgery Vulnerability

Concrete CMS is an open-source content management system designed for teams. Versions of Concrete CMS 9.5.0 and earlier contained a cross-site request forgeing vulnerability. This vulnerability stemmed from the doupdate method not verifying the CSRF token, which could allow attackers to trigger...

PT-2026-42572

Name of the Vulnerable Software and Affected Versions Concrete CMS versions 9.0.0 through 9.4.x Description Cross Site Request Forgery CSRF occurs at the 'concrete/controllers/backend/file' endpoint within the addFavoriteFolder$id function. CSRF is a flaw that allows an attacker to induce a user ...

CVE-2026-8140: Cross-Site Request Forgery (CSRF)

Concrete CMS 9.5.0 and below does not validate a CSRF token before processing requests to /dashboard/extend/install/download/ . The download method in concrete/controllers/singlepage/dashboard/extend/install.php checks only the canInstallPackages permission before fetching a remote marketplace...

PT-2026-42546

Name of the Vulnerable Software and Affected Versions Concrete CMS versions 9.5.0 and earlier Description Missing authorization in the 'bulk user assignment.php' endpoint allows an authenticated user with access to the bulk user assignment dashboard page to perform privilege escalation to the...

CVE-2026-8414: Cross-Site Request Forgery (CSRF)

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-2026-7879: Missing Authorization

In Concrete CMS 9.5.0 and below, the submitpassword method in concrete/controllers/singlepage/downloadfile.php allows unauthorized file access since downloading permission-restricted files bypasses the viewfile permission check. Files without passwords can be downloaded and any user who knows a...

Concrete CMS security vulnerabilities

Concrete CMS is an open-source content management system developed by Concrete CMS. Versions of Concrete CMS 9.5.0 and earlier have security vulnerabilities. These vulnerabilities stem from insecure direct object references in the Express Entry Detail block, which may allow unauthorized access to...

CVE-2026-8327: Improperly Controlled Modification of Dynamically-Determined Object Attributes

Concrete CMS below 9.5.0 and below is vulnerable to password change without reauthorization and session-hardening bypass. The user-profile edit controller passes the entire raw POST array to UserInfo::update without field whitelisting resulting in password change without requiring the current...

Concrete CMS security vulnerabilities

Concrete CMS is an open-source content management system designed for teams. Concrete CMS versions 9.5.0 and earlier have security vulnerabilities. These vulnerabilities stem from an oversight in the handling of OAuth 2.0 authorization codes, which bypasses account status checks. This could...

CVE-2026-8417: Cross-Site Request Forgery (CSRF)

Concrete CMS 9.5.0 and below does not validate a CSRF token before processing requests to /dashboard/extend/update/doupdate/ . The doupdate method in concrete/controllers/singlepage/dashboard/extend/update.php checks only canInstallPackages before executing upgradeCoreData and upgrade on the name...

PT-2026-42570

Name of the Vulnerable Software and Affected Versions Concrete CMS versions 9.0.0 through 9.4.x Description Cross Site Request Forgery CSRF occurs at the 'concrete/controllers/dialog/event/duplicate' endpoint. CSRF is a flaw that allows an attacker to trick a victim into performing actions they d...