CVE-2021-36855 : What You Need to Know

WordPress Booking Ultra Pro plugin version <= 1.1.4 has been identified with a Cross-Site Scripting (XSS) via Cross-Site Request Forgery (CSRF) vulnerability. This vulnerability allows attackers to execute malicious scripts on the target user's browser, potentially leading to unauthorized actions.

Understanding CVE-2021-36855

This section delves into the specifics of the CVE-2021-36855 vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2021-36855?

The CVE-2021-36855 is a Cross-Site Scripting (XSS) via Cross-Site Request Forgery (CSRF) vulnerability found in the Booking Ultra Pro plugin version <= 1.1.4 for WordPress websites.

The Impact of CVE-2021-36855

The vulnerability poses a medium risk with a CVSS base score of 6.1, allowing remote attackers to inject and execute malicious scripts, leading to potential unauthorized access and actions on affected websites.

Technical Details of CVE-2021-36855

This section outlines the vulnerability description, affected systems, versions, and the exploitation mechanism.

Vulnerability Description

The XSS via CSRF vulnerability in the Booking Ultra Pro WordPress plugin version <= 1.1.4 allows attackers to inject malicious scripts using CSRF techniques, compromising user data and the website's integrity.

Affected Systems and Versions

The affected product is Booking Ultra Pro (WordPress plugin) version <= 1.1.4.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious requests to the target website, leading to script injection and potential unauthorized access.

Mitigation and Prevention

This section provides essential steps to mitigate the CVE-2021-36855 vulnerability's risks and prevent potential exploits.

Immediate Steps to Take

Website administrators should immediately update the Booking Ultra Pro plugin to a secure version above 1.1.4 and perform a security audit to check for any unauthorized changes.

Long-Term Security Practices

Implement secure coding practices, conduct regular security assessments, and educate users on recognizing and reporting suspicious activities to enhance overall website security.

Patching and Updates

Regularly monitor security advisories and apply relevant patches issued by the plugin vendor to address known vulnerabilities and enhance website security.