Security Advisory

CVE-2026-8347

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-05-22 14:06:34

Last updated 2026-05-22 17:21:46

Assigner ConcreteCMS

State PUBLISHED

Description

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 ordering. 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:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks Winston Crooker for reporting.

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