CVE-2021-25100 : What You Need to Know

WordPress plugin GiveWP before version 2.17.3 is vulnerable to Reflected Cross-Site Scripting (XSS) due to improper handling of user input. This can lead to malicious code execution on the Donation Forms dashboard.

Understanding CVE-2021-25100

This vulnerability in GiveWP plugin allows attackers to inject malicious scripts into web pages viewed by other users.

What is CVE-2021-25100?

The GiveWP WordPress plugin versions prior to 2.17.3 fail to properly sanitize user-supplied data before outputting it back on the Donation Forms dashboard, resulting in a Reflected Cross-Site Scripting (XSS) vulnerability.

The Impact of CVE-2021-25100

This vulnerability could be exploited by an attacker to execute arbitrary JavaScript code in the context of the victim's browser session, potentially compromising user data or performing unauthorized actions.

Technical Details of CVE-2021-25100

This section provides more insight into the specific technical aspects of the CVE.

Vulnerability Description

The vulnerability arises from the plugin's failure to properly escape the 's' parameter before displaying it in an attribute on the Donation Forms dashboard, enabling attackers to inject and execute malicious scripts.

Affected Systems and Versions

The affected product is 'GiveWP – Donation Plugin and Fundraising Platform' with versions prior to 2.17.3.

Exploitation Mechanism

Attackers can craft malicious links containing script payloads that, when clicked by authenticated users with appropriate permissions, trigger the execution of malicious code in the victim's browser.

Mitigation and Prevention

To safeguard your WordPress site against CVE-2021-25100, follow the recommended mitigation strategies outlined below.

Immediate Steps to Take

Update the GiveWP plugin to version 2.17.3 or later to patch the vulnerability.
Implement web application firewalls (WAFs) to filter and block malicious requests that aim to exploit XSS vulnerabilities.

Long-Term Security Practices

Regularly monitor security mailing lists and vendor announcements for plugin updates and security patches.
Educate users about safe browsing habits to reduce the risk of falling victim to XSS attacks.

Patching and Updates

Always ensure your WordPress plugins are up to date to mitigate the risk of known vulnerabilities being exploited.