CVE-2021-4351

MEDIUM 5.8

Frontend File Manager <= 18.2 - Unauthenticated Post Meta Change

CVSS Score

5.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-862
Vendor	nmedia
Product	frontend file manager plugin
Published	Jun 7, 2023
Last Updated	Apr 8, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

nmedia / Frontend File Manager Plugin

0 < 18.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/5539aa79-66ad-43fa-967c-2bec877061e0?source=cve blog.nintechnet.com: https://blog.nintechnet.com/wordpress-frontend-file-manager-plugin-fixed-multiple-critical-vulnerabilities/

Credits

Jerome Bruandet