CVE-2021-36839 : Exploit Details and Defense Strategies

A detailed overview of the Authenticated Stored Cross-Site Scripting (XSS) vulnerability in the WordPress Social Media Follow Buttons Bar plugin version <= 4.73.

Understanding CVE-2021-36839

This CVE involves an Authenticated Stored Cross-Site Scripting (XSS) vulnerability found in the Social Media Follow Buttons Bar WordPress plugin version <= 4.73.

What is CVE-2021-36839?

The vulnerability allows attackers with admin+ privileges to inject malicious scripts into the plugin, potentially leading to unauthorized actions on the affected WordPress sites.

The Impact of CVE-2021-36839

With a CVSS v3.1 base score of 4.8 (Medium severity), the impact includes Low confidentiality and integrity impacts, requiring user interaction and high privileges for exploitation.

Technical Details of CVE-2021-36839

Details on the vulnerability, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability is an Authenticated Stored Cross-Site Scripting (XSS) issue within the WordPress Social Media Follow Buttons Bar plugin version <= 4.73.

Affected Systems and Versions

Social Media Follow Buttons Bar plugin version <= 4.73 is affected by this XSS vulnerability.

Exploitation Mechanism

Attackers with admin+ privileges can exploit this vulnerability by injecting malicious scripts through the affected plugin.

Mitigation and Prevention

Learn how to mitigate the risks and protect your WordPress site.

Immediate Steps to Take

Update the Social Media Follow Buttons Bar plugin to a secure version, restrict admin privileges, and monitor for unauthorized activities.

Long-Term Security Practices

Regularly update plugins, themes, and WordPress core, implement security plugins, and conduct security audits.

Patching and Updates

Stay informed about security patches, CVEs, and best practices for securing your WordPress site.