GitHub Advisoryadvisory · Packagist

GHSA-jqvq-gv67-3567 Concrete CMS is vulnerable to IDOR + wrong-authorization-level in the Express association Reorder dialog

LOW Published 2026-05-26 Modified 2026-06-29 Official page ↗
Aliases
CVE-2026-8347
Ecosystem
Packagist
Packages
concrete5/concrete5
Severity
Low
CVSS 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
Weaknesses
CWE-639
Reviewed
2026-06-29

Affected packages

• Packagist concrete5/concrete5: < 9.5.1 → fixed in 9.5.1

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. Thanks Winston Crooker for reporting.

Related

Alias · CVE (1)

  • CVE-2026-8347 Concrete CMS 9.5.0 and below is vulnerable to IDOR + wrong-authorization-level in the Express association Reorder dialog. vulnerability

Weakness · CWE (1)

  • CWE-639 Authorization Bypass Through User-Controlled Key weakness

References