CVE-2026-7879: Concrete CMS 9.5.0 and below is vulnerable to File Download Authorization Bypass in submit_password()
In Concrete CMS 9.5.0 and below, the submitpassword() method in concrete/controllers/singlepage/downloadfile.php allows unauthorized file access since downloading permission-restricted files bypasses the viewfile permission check. Files without passwords can be downloaded and any user who knows a file's password can download a password protected file regardless of whether they have permission to access the file. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 6.3 with vector CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N. Thanks Youssef Eid for reporting
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-7879?
The severity of CVE-2026-7879 is medium with a CVSS score of 6.3.
How do I fix CVE-2026-7879?
To fix CVE-2026-7879, upgrade to Concrete CMS version 9.5.1 or later, which addresses the file download authorization bypass.
What vulnerability does CVE-2026-7879 describe?
CVE-2026-7879 describes a file download authorization bypass vulnerability in the submit_password() method of Concrete CMS, allowing unauthorized access to files.
What versions of Concrete CMS are affected by CVE-2026-7879?
CVE-2026-7879 affects Concrete CMS versions 9.5.0 and below.
What can attackers do exploiting CVE-2026-7879?
Attackers can exploit CVE-2026-7879 to download permission-restricted files without proper authorization.