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Medium · 6.3 CVE-2026-7879 EUVD-2026-31356GHSA-fqg3-8w8r-8g94

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

Published May 21, 2026 · Updated May 22, 2026 · Assigned by ConcreteCMS

Description

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

Affected products

VendorProductAffectedFixed
Concrete CMS Concrete CMS — —

Affected packages

EcosystemPackageAffectedFixedRecord
Packagist concrete5/concrete5 < 9.5.1 9.5.1 GHSA-fqg3-8w8r-8g94

References