CVE-2021-4365 : What You Need to Know
Unauthenticated Stored Cross-Site Scripting in Frontend File Manager Plugin for WordPress versions up to 18.2 allows malicious script injection. Learn impact, mitigation, and patching details.
A detailed article about CVE-2021-4365, a vulnerability found in the Frontend File Manager plugin for WordPress that could allow unauthenticated stored cross-site scripting attacks.
Understanding CVE-2021-4365
This section dives into the vulnerability, its impact, technical details, and mitigation steps.
What is CVE-2021-4365?
The Frontend File Manager plugin for WordPress is vulnerable to Unauthenticated Stored Cross-Site Scripting in versions up to, and including, 18.2. This allows unauthenticated attackers to inject arbitrary web scripts.
The Impact of CVE-2021-4365
The vulnerability poses a HIGH severity risk, with a CVSS base score of 7.2. Attackers can execute malicious scripts on a victim's browser, compromising user data and system integrity.
Technical Details of CVE-2021-4365
This section covers the vulnerability description, affected systems, versions, and the exploitation mechanism.
Vulnerability Description
The flaw lies in the wpfm_edit_file_title_desc AJAX action, which lacks authentication and sanitization, enabling unauthenticated attackers to inject harmful scripts.
Affected Systems and Versions
The Frontend File Manager Plugin versions up to 18.2 are affected by this vulnerability, putting websites at risk of XSS attacks.
Exploitation Mechanism
Unauthenticated attackers can exploit this vulnerability by injecting malicious scripts that execute when a user accesses compromised pages.
Mitigation and Prevention
Learn how to address and prevent the CVE-2021-4365 vulnerability to secure your system.
Immediate Steps to Take
Website administrators should update the Frontend File Manager plugin to version 18.3 or higher to prevent exploitation.
Long-Term Security Practices
Ensure regular security audits, implement proper input validation, and educate users on safe browsing practices to mitigate XSS risks.
Patching and Updates
Stay proactive by applying security patches promptly, monitoring vulnerability disclosures, and keeping software up to date.