CVE-2021-4351 - CVE House

Back to Database

Status published Medium CVE-2021-4351

Frontend File Manager <= 18.2 - Unauthenticated Post Meta Change

5.8 CVSS

Vulnerability Description

The Frontend File Manager plugin for WordPress is vulnerable to Unauthenticated Post Meta Change in versions up to, and including, 18.2. This is due to lacking authentication protections, capability checks, and sanitization, all on the wpfm_file_meta_update AJAX action. This makes it possible for unauthenticated attackers to change the meta data of certain posts and pages.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-4351

Check My Exposure

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Jerome Bruandet

References

More from nmedia

View All →

Simple User Registration <= 6.3 - Unauthenticated Privilege Escalation

Admin and Customer Messages After Order for WooCommerce: OrderConvo <= 14 - Missing Authorization to Unauthenticated User Impersonation in Order Messages

Admin and Customer Messages After Order for WooCommerce: OrderConvo <= 14 - Missing Authorization to Unauthenticated Information Disclosure

Frontend File Manager Plugin <= 23.4 - Insecure Direct Object Reference to Authenticated (Subscriber+) Arbitrary File Renaming

Simple User Registration <= 6.6 - Unauthenticated Stored Cross-Site Scripting

Affected Vendor

nmedia

View all reports →

Affected Software

Frontend File Manager Plugin

Vulnerable Versions:

0

Timeline

Official Publish: June 7th, 2023

Last Modified: April 8th, 2026

Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application

T1068 Exploitation for Privilege Escalation

Privilege Escalation

T1078 Valid Accounts

T1531 Account Access Removal