CVE-2021-4350: high-severity vulnerability in nmedia Frontend File Manager Plugin
Frontend File Manager <= 18.2 - Unauthenticated HTML Injection leading to Spam Emails
Published · Updated
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.2epss 0.7%
exploitation probability
0.7%top 49% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L
Affected products
nmedia · Frontend File Manager PluginRelated CVEs — nmedia Frontend File Manager Plugin
In the same product, most dangerous first.
CVE-2016-15042CRITICALFrontend File Manager < 4.0 & N-Media Post Front-end Form < 1.1 & - Arbitrary File UploadEPSS 5.7%CVE-2021-4368CRITICALFrontend File Manager <= 18.2 - Authenticated Settings Change leading to Arbitrary File UploadEPSS 1.9%CVE-2021-4356CRITICALFrontend File Manager <= 18.2 - Unauthenticated Arbitrary File DownloadEPSS 1.5%CVE-2021-4359MEDIUMFrontend File Manager Plugin <= 18.2 - Unauthenticated Arbitrary Post DeletionEPSS 0.9%CVE-2021-4369MEDIUMFrontend File Manager <= 18.2 - Unauthenticated Content InjectionEPSS 0.8%CVE-2021-4365HIGHFrontend File Manager <= 18.2 - Unauthenticated Stored Cross-Site ScriptingEPSS 0.8%