CVE-2021-24273 : Security Advisory and Response

WordPress plugin 'Clever Addons for Elementor' before version 2.1.0 is vulnerable to stored Cross-Site Scripting (XSS) attacks by lower-privileged users. Here's what you need to know about CVE-2021-24273.

Understanding CVE-2021-24273

This CVE identifies a security vulnerability in the 'Clever Addons for Elementor' WordPress plugin that allows contributors and higher roles to conduct a stored XSS attack.

What is CVE-2021-24273?

The 'Clever Addons for Elementor' plugin before 2.1.0 contains widgets that are vulnerable to stored Cross-Site Scripting (XSS) attacks. This can be exploited by lower-privileged users, such as contributors, through a similar method.

The Impact of CVE-2021-24273

The vulnerability allows attackers to inject malicious scripts into the plugin's widgets, potentially leading to unauthorized access, data theft, defacement, or other malicious activities on affected websites.

Technical Details of CVE-2021-24273

The technical details of CVE-2021-24273 include:

Vulnerability Description

The vulnerability arises from a lack of proper input validation, enabling attackers to store malicious scripts within the plugin's widgets.

Affected Systems and Versions

The vulnerability affects 'Clever Addons for Elementor' plugin versions prior to 2.1.0.

Exploitation Mechanism

Attackers with contributor privileges or higher can exploit this vulnerability by injecting malicious scripts into the vulnerable widgets.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-24273, consider the following steps:

Immediate Steps to Take

Update the 'Clever Addons for Elementor' plugin to version 2.1.0 or higher.
Monitor for any unauthorized changes or activities on your WordPress site.

Long-Term Security Practices

Regularly update all plugins and themes on your WordPress site.
Educate users with elevated privileges about potential security risks and best practices.

Patching and Updates

Stay informed about security advisories related to WordPress plugins and apply patches promptly to safeguard your website.