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    CVE-2021-4350

    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.

    Published:Jun 7, 2023
    Last Modified:Apr 8, 2026
    EPS:Jun 7, 2023
    EPSS Score:0.00146
    CVSS Score:7.2

    Affected Products

    Vendor
    Najeebmedia
    Product
    Frontend File Manager Plugin

    Exploits

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

    Common Weakness Enumeration

    CWE-862 Missing Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-665 Exploitation of Thunderbolt Protection Flaws

    Related CVEs

    CVE-2026-8095 (CVSS 8.1) — The Frontend File Manager Plugin plugin for WordPress is vulnerable to Authenticated Arbitrary File Deletion i…
    CVE-2026-1280 (CVSS 7.5) — The Frontend File Manager Plugin for WordPress is vulnerable to unauthorized file sharing due to a missing cap…
    CVE-2025-13382 (CVSS 4.3) — The Frontend File Manager Plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versio…
    CVE-2023-7306 (CVSS 7.5) — The Frontend File Manager Plugin plugin for WordPress is vulnerable to unauthorized loss of data due to a miss…
    CVE-2023-5105 (CVSS 6.5) — The Frontend File Manager Plugin WordPress plugin before 22.6 has a vulnerability that allows an Editor+ user …
    CVE-2021-4369 (CVSS 5.8) — The Frontend File Manager plugin for WordPress is vulnerable to Unauthenticated Content Injection in versions …
    CVE-2021-4368 (CVSS 9.9) — The Frontend File Manager plugin for WordPress is vulnerable to Authenticated Settings Change in versions up t…
    CVE-2021-4365 (CVSS 7.2) — The Frontend File Manager plugin for WordPress is vulnerable to Unauthenticated Stored Cross-Site Scripting in…
    CVE-2021-4359 (CVSS 6.5) — The Frontend File Manager plugin for WordPress is vulnerable to Unauthenticated Arbitrary Post Deletion in ver…
    CVE-2021-4356 (CVSS 9) — The Frontend File Manager plugin for WordPress is vulnerable to Unauthenticated Arbitrary File Download in v…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High