CVE-2021-24271 Explained : Impact and Mitigation

A stored Cross-Site Scripting (XSS) vulnerability in the "Ultimate Addons for Elementor" WordPress Plugin before version 1.30.0 allows lower-privileged users to execute malicious scripts. This CVE is credited to Ramuel Gall.

Understanding CVE-2021-24271

This CVE identifies a significant security issue in the affected plugin that puts websites at risk of XSS attacks by certain user roles.

What is CVE-2021-24271?

The "Ultimate Addons for Elementor" plugin, prior to version 1.30.0, contains multiple widgets that are susceptible to stored Cross-Site Scripting (XSS) attacks. Attackers with contributor-level access or higher can exploit this vulnerability.

The Impact of CVE-2021-24271

This vulnerability allows malicious contributors to inject harmful scripts into the website, potentially compromising user data and website integrity. It poses a serious threat to the security of WordPress sites utilizing the affected plugin.

Technical Details of CVE-2021-24271

This section outlines the specific technical aspects of the CVE.

Vulnerability Description

The vulnerability lies in the plugin's widgets, which lack proper input validation, enabling attackers to inject malicious scripts that are executed within the context of the website.

Affected Systems and Versions

The issue impacts websites using the "Ultimate Addons for Elementor" plugin with versions earlier than 1.30.0. Sites with contributor-level user roles and above are particularly vulnerable.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting and submitting malicious content through the affected widgets in the plugin, leading to the execution of unauthorized scripts.

Mitigation and Prevention

Protect your website by following these essential security measures.

Immediate Steps to Take

Update: Ensure that you update the plugin to version 1.30.0 or later to patch the vulnerability.
Restrict User Access: Limit user roles and permissions to minimize the impact of potential attacks.

Long-Term Security Practices

Regular Audits: Conduct periodic security audits to detect and address any vulnerabilities promptly.
Security Plugins: Implement security plugins to enhance protection against XSS and other threats.

Patching and Updates

Stay informed about security updates and apply patches promptly to keep your website secure.