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GHSA-jqvq-gv67-3567

Concrete CMS is vulnerable to IDOR + wrong-authorization-level in the Express association Reorder dialog

Source: GitHub Advisory Database (reviewed) Low CVE-2026-8347

Packages

EcosystemPackageAffectedFixed in
Packagist concrete5/concrete5 < 9.5.1 9.5.1

Details

As written in the advisory (Markdown source, shown as plain text).

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. Thanks Winston Crooker for reporting.

References

External links from the advisory. They lead to third-party sites.