TI-2021-03207 Aliases CVE-2021-4350 GHSA-gc42-wwv9-7qjr

Frontend File Manager <= 18.2 - Unauthenticated HTML Injection leading to Spam Emails

LOW 39CWE-862Published 2023-06-07 · Updated 2026-04-08

Key facts

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

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

Summary

The Frontend File Manager plugin for WordPress is vulnerable to Unauthenticated HTML Injection in versions up to, and including, 18.2. This is due to lacking authentication protections on the wpfm_send_file_in_email AJAX action. This makes it possible for unauthenticated attackers to send emails using the site with a custom subject, recipient email, and body with unsanitized HTML content. This effectively lets the attacker use the site as a spam relay.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00672 52nd 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: Yes
Technical impact: Partial

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
nmedia	Frontend File Manager Plugin	before 18.3	18.3	Patch available	CNA

Frontend File Manager Plugin Vendornmedia Affected before 18.3 Fixed in 18.3 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:najeebmedia:frontend_file_manager_plugin::::::wordpress::*	up to 18.2	Vulnerable	Najeebmedia

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 · 2023-06-07
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-2021-03213 Frontend File Manager <= 18.2 - Unauthenticated Arbitrary File DownloadPriority MEDIUM 46
- TI-2021-03222 Frontend File Manager <= 18.2 - Unauthenticated Stored Cross-Site ScriptingPriority LOW 39
Show all 8 records →

Timeline

2026-10-02 Threatist record created from CVE-2021-4350
2026-10-03 Alias added: GHSA-gc42-wwv9-7qjr

References

Exploit 1

https://blog.nintechnet.com/wordpress-frontend-file-manager-plugin-fixed-multiple-critical-vulnerabilities/

Advisory 1

https://www.wordfence.com/threat-intel/vulnerabilities/id/49150180-9de0-4318-b21b-779daaeb7a52?source=cve

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