Packagist/concrete5/concrete5 CVE-2026-8421: high 8.8, EPSS 0.17%
Concrete CMS contains a CSRF vulnerability
Action: Upgrade concrete5/concrete5 to 9.5.1 or later.
composer require concrete5/concrete5:9.5.1Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 9.5.1 | - |
Fixed versions
| 9.5.1 |
Sources
- osv: GHSA-4c8m-6fwx-m7xq
- nvd: CVE-2026-8421
- https://documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notes
- https://github.com/concretecms/concretecms
CVE-2026-8421 · published · modified · JSON