CVE-2021-4350 Frontend File Manager <= 18.2 - Unauthenticated HTML Injection leading to Spam Emails
Unauthenticated attackers can send spam emails via the Frontend File Manager plugin due to missing authorization checks on an AJAX action.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-4350?
CVE-2021-4350 is a high-severity missing authorization vulnerability in nmedia Frontend File Manager Plugin, published on 7 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-862
Which versions are affected by CVE-2021-4350?
It affects 1 product.
Products include Najeebmedia Frontend File Manager Plugin.
How do I fix CVE-2021-4350?
No fix has been published for CVE-2021-4350 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2021-4350 being exploited?
There is no known exploitation of CVE-2021-4350 in the wild and no public exploit code.
Other vulnerabilities in nmedia Frontend File Manager Plugin
- CVE-2021-4368 Frontend File Manager <= 18.2 - Authenticated Settings Change leading to Arbitrary File Upload
- CVE-2021-4356 Frontend File Manager <= 18.2 - Unauthenticated Arbitrary File Download
- CVE-2021-4365 Frontend File Manager <= 18.2 - Unauthenticated Stored Cross-Site Scripting
- CVE-2023-5105 Frontend File Manager < 22.6 - Editor+ Arbitrary File Download
- CVE-2021-4359 Frontend File Manager Plugin <= 18.2 - Unauthenticated Arbitrary Post Deletion
Sources
Also known as GHSA-gc42-wwv9-7qjr.