Frontend File Manager Plugin up to 23.6 on WordPress Download Endpoint wpfm_download file_id authorization

Summaryinfo

A vulnerability described as problematic has been identified in Frontend File Manager Plugin up to 23.6 on WordPress. Affected is the function wpfm_download of the component Download Endpoint. The manipulation of the argument file_id results in authorization. This vulnerability is identified as CVE-2026-5337. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Frontend File Manager Plugin up to 23.6 on WordPress. Affected is the function wpfm_download of the component Download Endpoint. The manipulation of the argument file_id with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. This is going to have an impact on confidentiality. CVE summarizes:

During the analysis, it was identified that authenticated attackers with Subscriber-level access or higher are able to perform an Insecure Direct Object Reference (IDOR) attack. This vulnerability exists because the Frontend File Manager Plugin WordPress plugin through 23.6 does not properly validate user authorization for the requested uploaded file when processing download requests. By modifying the value of the 'file_id' parameter in the download endpoint (e.g., http://localhost/?do=wpfm_download&file_id=40&nm_file_nonce=a36fb893f1), an attacker can access files belonging to other users, including privileged users such as administrators. This allows unauthorized access/read to sensitive data stored within the application.

The weakness was released by Mohamad Nour Almujarkesh. The advisory is shared for download at wpscan.com. This vulnerability is traded as CVE-2026-5337 since 04/01/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 05/03/2026).

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-26818). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Name

• Frontend File Manager Plugin

Version

• 23.0
• 23.1
• 23.2
• 23.3
• 23.4
• 23.5
• 23.6

CPE 2.3info

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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