CVE-2021-25063 : Security Advisory and Response

This article provides details about CVE-2021-25063, a vulnerability in the Skins for Contact Form 7 WordPress plugin before version 2.5.1 that leads to Reflected Cross-Site Scripting (XSS).

Understanding CVE-2021-25063

This section delves into the impact and technical details of the CVE-2021-25063 vulnerability.

What is CVE-2021-25063?

The Skins for Contact Form 7 WordPress plugin before version 2.5.1 fails to sanitize and escape the 'tab' parameter, resulting in a Reflected Cross-Site Scripting (XSS) vulnerability.

The Impact of CVE-2021-25063

The exploitation of this vulnerability could allow attackers to execute malicious scripts in the context of an admin page, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2021-25063

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

Vulnerability Description

The lack of proper input sanitization in the 'tab' parameter of the Skins for Contact Form 7 WordPress plugin before 2.5.1 enables attackers to craft malicious scripts that get executed in an admin page.

Affected Systems and Versions

Skins for Contact Form 7 versions prior to 2.5.1 are affected by this vulnerability, leaving them exposed to potential XSS attacks.

Exploitation Mechanism

By injecting malicious scripts into the 'tab' parameter, threat actors can carry out Reflected Cross-Site Scripting attacks, compromising the security and integrity of the affected WordPress installations.

Mitigation and Prevention

Learn how to protect your systems from CVE-2021-25063 and implement security measures to prevent XSS vulnerabilities.

Immediate Steps to Take

Users are advised to update the Skins for Contact Form 7 plugin to version 2.5.1 or higher to mitigate the XSS risk and secure their WordPress installations.

Long-Term Security Practices

In addition to updating the plugin, developers should follow secure coding practices, validate input data, and regularly audit for vulnerabilities to enhance the overall security posture.

Patching and Updates

Stay informed about security patches and updates released by WordPress plugin developers to address known vulnerabilities and strengthen the security of your website.