Frontend File Manager Plugin: Broken access control

Frontend File Manager Plugin is affected by broken access control. Exploitation requires an authenticated subscriber account. A successful request can reach data or an operation that should be restricted to another user or a more privileged role. The published affected range is <= 23.6.

CVE / CNA score 6.5 CVSS 3.1 · 134c704f-9b21-4f2e-91b3-4a467353bcc0

NVD score Pending NVD has not published its own CVSS assessment.

Component: Frontend File Manager Plugin
Plugin slug: frontend-file-manager-plugin
Affected: <= 23.6
Safe version: See mitigation notes
Published: May 03, 2026
Weakness: CWE-639 — Authorization Bypass Through User-Controlled Key

This CVE was published May 03, 2026 and is one of 19 known issues for this plugin.

What to do

Update, patch or deactivate.

No fixed release is identified. Update Frontend File Manager Plugin when a release after 23.6 becomes available; until then, disable and remove it when the site's risk warrants.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

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.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

Primary and upstream sources

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