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TI-2021-03213 Aliases CVE-2021-4356GHSA-538r-g5r4-2c2w

Frontend File Manager <= 18.2 - Unauthenticated Arbitrary File Download

Priority MEDIUM 46CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-862.

Summary

The Frontend File Manager plugin for WordPress is vulnerable to Unauthenticated Arbitrary File Download 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 download arbitrary files on the site, potentially leading to site takeover.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01522 74th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Frontend File Manager Plugin (nmedia): 18.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
nmediaFrontend File Manager Pluginbefore 18.318.3Patch availableCNA
  • Frontend File Manager Plugin Vendornmedia Affected before 18.3 Fixed in 18.3 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:najeebmedia:frontend_file_manager_plugin:*:*:*:*:*:wordpress:*:*up to 18.2VulnerableNajeebmedia
  • cpe:2.3:a:najeebmedia:frontend_file_manager_plugin:*:*:*:*:*:wordpress:*:* Versions up to 18.2 Vulnerable ·Najeebmedia

Remediation

  • Fix · CNA Frontend File Manager Plugin (nmedia) Fixed in 18.3

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    nmedia Frontend File Manager Plugin 18.3

    8 records Highest priority Priority MEDIUM 2 MEDIUM, 6 LOW

    Other records, highest priority first

    • TI-2021-03225 Frontend File Manager <= 18.2 - Authenticated Settings Change leading to Arbitrary File UploadPriority MEDIUM 47
    • TI-2021-03222 Frontend File Manager <= 18.2 - Unauthenticated Stored Cross-Site ScriptingPriority LOW 39
    • TI-2021-03207 Frontend File Manager <= 18.2 - Unauthenticated HTML Injection leading to Spam EmailsPriority LOW 39
    Show all 8 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-4356
  2. 2026-10-03 Alias added: GHSA-538r-g5r4-2c2w

References

Exploit 1

Patch 1

Advisory 1

  • TI-2016-09162 Frontend File Manager < 4.0 & N-Media Post Front-end Form < 1.1 & - Arbitrary File Upload CVSS 3.1CRITICAL 9.8
  • TI-2025-03863 Simple User Registration <= 6.3 - Unauthenticated Privilege Escalation CVSS 3.1CRITICAL 9.8
  • TI-2024-22153 WordPress OrderConvo plugin <= 12.4 - Unauthenticated API Access to Arbitrary File Upload vulnerability CVSS 3.1CRITICAL 10.0
  • TI-2024-33090 WordPress Simple User Registration plugin <= 6.7 - Broken Authentication vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2015-08065 Website Contact Form With File Upload <= 1.3.4 - Arbitrary File Upload CVSS 3.1CRITICAL 9.8
  • TI-2012-03100 Unrestricted file upload vulnerability in doupload.php in the Nmedia Member Conversation… CVSS 2.0HIGH 7.5
See all 39 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences