CVE-2021-25066 Explained : Impact and Mitigation

A detailed article about CVE-2021-25066, a vulnerability in the Ninja Forms Contact Form WordPress plugin.

Understanding CVE-2021-25066

This CVE identifies a vulnerability in the Ninja Forms Contact Form WordPress plugin that allows high privilege users to execute Cross-Site Scripting attacks.

What is CVE-2021-25066?

The Ninja Forms Contact Form WordPress plugin before version 3.6.10 is vulnerable to Cross-Site Scripting attacks due to inadequate data sanitization and escaping in imported data.

The Impact of CVE-2021-25066

This vulnerability enables high privilege users to perform malicious Cross-Site Scripting attacks despite restrictions on unfiltered_html capability.

Technical Details of CVE-2021-25066

This section provides insights into the vulnerability specifics.

Vulnerability Description

The issue lies in the plugin's failure to properly sanitize and escape imported data, exposing a pathway for Cross-Site Scripting exploitation.

Affected Systems and Versions

The Ninja Forms Contact Form plugin versions prior to 3.6.10 are impacted by this vulnerability.

Exploitation Mechanism

High privilege users can exploit the vulnerability to launch Cross-Site Scripting attacks, even when unfiltered_html capability is disabled.

Mitigation and Prevention

Learn about the steps to address and prevent the CVE-2021-25066 vulnerability.

Immediate Steps to Take

Users are advised to update the Ninja Forms Contact Form plugin to version 3.6.10 or newer to mitigate the risk of Cross-Site Scripting attacks.

Long-Term Security Practices

Implement robust data sanitization and escaping practices within WordPress plugins to prevent similar security loopholes.

Patching and Updates

Stay vigilant for security updates and promptly install patches to protect against known vulnerabilities.