CVE-2021-4350

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

Published Jun 7, 2023 CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-34177 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.
History
Type Values Removed Values Added
Title Frontend File Manager <= 18.2 - Unauthenticated HTML Injection leading to Spam Emails
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Wordfence
Published
Updated
Apr 8, 2026, 4:50 PM
Reserved
Jun 6, 2023, 12:40 PM
Status
Modified
Published
Jun 7, 2023, 2:15 AM
Modified
Jun 17, 2026, 4:19 AM