What is GHSA-6fxm-r8p3-mx5c?

GHSA-6fxm-r8p3-mx5c is a security advisory published by GitHub Security Advisories with Low severity. Concrete CMS is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/backend/file rescan()

Which CVE IDs does GHSA-6fxm-r8p3-mx5c cover?

GHSA-6fxm-r8p3-mx5c covers the following CVE IDs: CVE-2026-8433. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

Which products are affected by GHSA-6fxm-r8p3-mx5c?

GHSA-6fxm-r8p3-mx5c affects 1 product, including: composer/concrete5/concrete5:\u003e= 9.0.0RC1, \u003c 9.5.1.

GHSA-6fxm-r8p3-mx5cLow

Concrete CMS is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/backend/file rescan()

Vendor

GitHub Security Advisories

Published

May 22, 2026

Last Modified

June 24, 2026

🔗 CVE IDs covered (1)

CVE-2026-8433 →

📋 Description

Concrete CMS 9 before 9.5.0 is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/backend/file rescan().

🎯 Affected products1

composer/concrete5/concrete5:>= 9.0.0RC1, < 9.5.1

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-8433
https://documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notes
https://github.com/advisories/GHSA-6fxm-r8p3-mx5c