What is GHSA-chfm-cm6h-q5x7?

GHSA-chfm-cm6h-q5x7 is a security advisory published by GitHub Security Advisories with Medium severity. Concrete CMS is subject to Insecure Direct Object Reference (IDOR) in the Express Entry Detail block

Which CVE IDs does GHSA-chfm-cm6h-q5x7 cover?

GHSA-chfm-cm6h-q5x7 covers the following CVE IDs: CVE-2026-7881. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

Which products are affected by GHSA-chfm-cm6h-q5x7?

GHSA-chfm-cm6h-q5x7 affects 1 product, including: composer/concrete5/concrete5:\u003c 9.5.1.

GHSA-chfm-cm6h-q5x7Medium

Concrete CMS is subject to Insecure Direct Object Reference (IDOR) in the Express Entry Detail block

Vendor

GitHub Security Advisories

Published

May 22, 2026

Last Modified

June 24, 2026

🔗 CVE IDs covered (1)

CVE-2026-7881 →

📋 Description

Concrete CMS 9.5.0 and below is subject to Insecure Direct Object Reference (IDOR) in the Express Entry Detail block via the exEntryID parameter. This IDOR leads to unauthorized access to all Express form submissions. The Concrete CMS security team thanks Tristan Madani for reporting this issue.

🎯 Affected products1

composer/concrete5/concrete5:< 9.5.1

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-7881
https://documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notes
https://github.com/advisories/GHSA-chfm-cm6h-q5x7