CVE-2021-36863 : Security Advisory and Response

A detailed overview of the Auth. Stored Cross-Site Scripting (XSS) vulnerability in the WordPress Quiz And Survey Master plugin <= 7.3.4.

Understanding CVE-2021-36863

This section provides insight into the nature and impact of the CVE-2021-36863 vulnerability.

What is CVE-2021-36863?

The CVE-2021-36863 refers to an Auth. Stored Cross-Site Scripting (XSS) vulnerability found in the ExpressTech Quiz And Survey Master plugin version <= 7.3.4 used in WordPress installations.

The Impact of CVE-2021-36863

This vulnerability could allow an attacker with contributor or higher privileges to store malicious scripts, potentially leading to unauthorized actions when executed by other users.

Technical Details of CVE-2021-36863

Explore the technical aspects of the vulnerability and its exploitation.

Vulnerability Description

The vulnerability allows authenticated users to inject malicious scripts via the Quiz And Survey Master plugin, posing a risk of XSS attacks within the WordPress environment.

Affected Systems and Versions

The vulnerability affects systems using the ExpressTech Quiz And Survey Master plugin version <= 7.3.4 on WordPress.

Exploitation Mechanism

Attackers with appropriate privileges can exploit this vulnerability by injecting malicious scripts into the application, potentially compromising user data or performing unauthorized actions.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2021-36863 and prevent exploitation.

Immediate Steps to Take

Users are advised to update the plugin to version 7.3.5 or higher to mitigate the vulnerability and enhance security.

Long-Term Security Practices

Implement strict user access controls, regularly monitor for unusual activities, and stay informed about plugin vulnerabilities to enhance long-term security.

Patching and Updates

Regularly apply security patches and updates to ensure the protection of WordPress installations against known vulnerabilities.