CVE-2026-8426
1 advisory.
Packagist/concrete5/concrete5 CVE-2026-8426: high
Concrete CMS does not validate a CSRF token before processing requests to `/dashboard/extend/update/prepare_remote_upgrade/<remoteMPID>`
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-5rj5-gfmr-hrc3
- https://nvd.nist.gov/vuln/detail/CVE-2026-8426
- https://documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notes
- https://github.com/concretecms/concretecms
CVE-2026-8426 · published · modified · JSON