CVE-2021-24833 : Security Advisory and Response

A stored Cross-Site Scripting vulnerability in the YOP Poll WordPress plugin before version 6.3.1 allows users with low roles like author to execute arbitrary script code, posing a security risk.

Understanding CVE-2021-24833

This CVE identifies a stored Cross-Site Scripting vulnerability in the YOP Poll WordPress plugin, allowing unauthorized execution of script code by users with minimal access.

What is CVE-2021-24833?

The YOP Poll WordPress plugin version prior to 6.3.1 is vulnerable to stored Cross-Site Scripting, enabling users even with lower privileges to run potentially harmful scripts within the application's environment.

The Impact of CVE-2021-24833

This vulnerability allows attackers to execute malicious scripts when creating or previewing polls, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2021-24833

The technical details of the CVE encompass the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The flaw arises from inadequate validation of question and answer text parameters in the Create Poll module, enabling script executions.

Affected Systems and Versions

YOP Poll plugin versions earlier than 6.3.1 are impacted by this stored Cross-Site Scripting vulnerability.

Exploitation Mechanism

By exploiting the vulnerability in the Admin preview module, threat actors with limited access can inject and execute malicious scripts.

Mitigation and Prevention

To address CVE-2021-24833, users should take immediate action and adopt long-term security practices along with regular patching and updates.

Immediate Steps to Take

Update the YOP Poll plugin to version 6.3.1 or above to mitigate the security risk associated with this vulnerability.

Long-Term Security Practices

Enforce the principle of least privilege, monitor user activities, and conduct regular security audits to prevent similar security issues.

Patching and Updates

Stay updated with the latest security patches and ensure timely installation to protect your WordPress site from potential threats.