CVE-2021-24241 Explained : Impact and Mitigation

A detailed overview of CVE-2021-24241, a vulnerability in the Advanced Custom Fields Pro WordPress plugin.

Understanding CVE-2021-24241

In this section, we'll delve into the nature of the CVE-2021-24241 vulnerability.

What is CVE-2021-24241?

The Advanced Custom Fields Pro WordPress plugin before version 5.9.1 was susceptible to a reflected Cross-Site Scripting (XSS) issue due to improper URL escaping.

The Impact of CVE-2021-24241

This vulnerability could be exploited on the update settings page, potentially allowing attackers to execute malicious scripts in the context of a user's browser.

Technical Details of CVE-2021-24241

Explore the technical specifics related to CVE-2021-24241.

Vulnerability Description

The flaw stemmed from the plugin's failure to adequately escape the generated update URL within an attribute.

Affected Systems and Versions

Affected systems include instances running Advanced Custom Fields Pro versions prior to 5.9.1.

Exploitation Mechanism

Attackers could exploit this CVE by crafting a malicious URL and enticing a user with update permissions to click it.

Mitigation and Prevention

Discover essential steps to mitigate the risks associated with CVE-2021-24241.

Immediate Steps to Take

Users should update the Advanced Custom Fields Pro plugin to version 5.9.1 or newer to address this vulnerability.

Long-Term Security Practices

Regularly updating plugins and adopting secure coding practices can help prevent XSS vulnerabilities.

Patching and Updates

Stay informed about security patches and promptly apply updates to safeguard against known vulnerabilities.