CVE-2026-7879CWE-862

Concrete CMS 9.5.0 and below is vulnerable to File Download Authorization Bypass in submit_password()

Medium · published May 21, 2026

CVSS v4.0
6.3
EPSS
0%
Percentile
22.4
In the wild
Unconfirmed
What it is

In Concrete CMS 9.5.0 and below,  the submit_password() method in concrete/controllers/single_page/download_file.php allows unauthorized file access since downloading

permission-restricted files bypasses the view_file 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

The record
Technical detail
CVSS v4.0
6.3 · MEDIUM
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
EPSS
0.00308 · 22.4th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-05-21T21:07Z
EPSS history
Timeline
  • 21 MAY 21:07Z
    Concrete CMS 9.5.0 and below is vulnerable to File Download Authorization Bypass in submit_password()
    cvelistv5