CVE-2026-8347

Concrete CMS 9.5.0 and below is vulnerable to IDOR + wrong-authorization-level in the Express association Reorder dialog. This can cause Cross-entity state tampering with view-only permission on one entry. To be affected, a website has to be using express and relying on express entity...

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 contain security vulnerabilities. These vulnerabilities stem from insecure direct object references in the Express-associated reorder dialog boxes, as well as incorrect...