Concrete CMS up to 9.5.0 download_file.php submit_password authorization

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Concrete CMS up to 9.5.0. This vulnerability affects the function submit_password of the file concrete/controllers/single_page/download_file.php. The manipulation leads to authorization. This vulnerability is listed as CVE-2026-7879. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in Concrete CMS up to 9.5.0. It has been rated as problematic. This issue affects the function submit_password of the file concrete/controllers/single_page/download_file.php. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality. The summary by CVE 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 weakness was presented by Youssef Eid. The advisory is shared at documentation.concretecms.org. The identification of this vulnerability is CVE-2026-7879 since 05/05/2026. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/22/2026).

By approaching the search of inurl:concrete/controllers/single_page/download_file.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Content Management System

Vendor

• Concrete

Name

• CMS

Version

• 9.0
• 9.1
• 9.2
• 9.3
• 9.4
• 9.5.0

License

• open-source

CPE 2.3info

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CPE 2.2info

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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