~ / search / GHSA-xjg6-5v39-v7fc

GHSA-xjg6-5v39-v7fc

Concrete CMS is vulnerable to CSRF via Backend\File::approveVersion

Source: GitHub Advisory Database (reviewed) Low CVE-2026-8340

Packages

EcosystemPackageAffectedFixed in
Packagist concrete5/concrete5 < 9.5.1 9.5.1

Details

As written in the advisory (Markdown source, shown as plain text).

Concrete CMS 9.5.0 and below is vulnerable to CSRF via Backend\File::approveVersion. Victim with edit_file_contents permission is CSRF'd into publishing an attacker-chosen previously-uploaded version (downgrade to an older version of a file, or activation of a co-editor's unpublished version). Thanks Winston Crooker for reporting.

References

External links from the advisory. They lead to third-party sites.