CVE-2026-8347
Concrete CMS 9.5.0 and below is vulnerable to IDOR + wrong-authorization-level in Express association Reorder dialog
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-639 |
| Vendor | concrete cms |
| Product | concrete cms |
| Published | May 22, 2026 |
| Last Updated | May 22, 2026 |
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Affected Versions
Concrete CMS / Concrete CMS
5.0 ≤ 9.5.0
References
Credits
Winston Crooker