CVE-2026-8340

Concrete CMS 9.5.0 and below is vulnerable to CSRF via Backend\File::approveVersion. Victim with editfilecontents 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an attacker-chosen previously-uploaded version downgrade to an older version of a file, or activation of a co-editor's unpublished version. The...

EUVD-2026-31441

Concrete CMS 9.5.0 and below is vulnerable to CSRF via Backend\File::approveVersion. Victim with editfilecontents 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an attacker-chosen previously-uploaded version downgrade to an older version of a file, or activation of a co-editor's unpublished version. The...

CVE-2026-8340

Concrete CMS 9.5.0 and below is vulnerable to CSRF via Backend\File::approveVersion, enabling a user with edit_file_contents to publish an attacker‑chosen version (downgrade or publish an unpublished co-editor version). The entry provides CVSS v4.0 base score 2.3 (low) with network attack vector ...