CVE-2021-26033 : Security Advisory and Response

A missing token check in Joomla! CMS versions 3.0.0 through 3.9.26 leads to a CSRF vulnerability in the AJAX reordering endpoint.

Understanding CVE-2021-26033

This CVE involves a Cross-Site Request Forgery (CSRF) issue in Joomla! CMS versions 3.0.0 through 3.9.26, allowing attackers to exploit the AJAX reordering endpoint.

What is CVE-2021-26033?

An issue in Joomla! 3.0.0 through 3.9.26 enables a CSRF vulnerability due to a missing token check in the AJAX reordering endpoint.

The Impact of CVE-2021-26033

This vulnerability could be exploited by malicious actors to perform unauthorized actions via CSRF attacks, potentially leading to data manipulation or other security breaches.

Technical Details of CVE-2021-26033

The technical aspects of CVE-2021-26033 include:

Vulnerability Description

A missing token check in Joomla! CMS versions 3.0.0 through 3.9.26 that results in a CSRF vulnerability in the AJAX reordering endpoint.

Affected Systems and Versions

Joomla! CMS versions 3.0.0 through 3.9.26 are affected by this vulnerability, exposing them to potential CSRF attacks.

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the AJAX reordering endpoint through CSRF attacks, bypassing the missing token check.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-26033, consider the following steps:

Immediate Steps to Take

Update Joomla! CMS to the latest version to patch the CSRF vulnerability.
Monitor for any suspicious activities on the AJAX reordering endpoint.

Long-Term Security Practices

Implement secure coding practices to prevent CSRF vulnerabilities in web applications.
Conduct regular security assessments and audits to identify and address potential security flaws.

Patching and Updates

Stay informed about security advisories from Joomla! Project and apply patches promptly to address known vulnerabilities.