CVE-2023-26091 Explained : Impact and Mitigation

This CVE was published on February 26, 2023, and pertains to a vulnerability in the frp_form_answers extension for TYPO3.

Understanding CVE-2023-26091

This section will delve into the specifics of CVE-2023-26091, focusing on the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2023-26091?

CVE-2023-26091 involves the frp_form_answers extension (Forms Export) in TYPO3 versions before 3.1.2 and 4.x before 4.0.2. The vulnerability allows an attacker to execute cross-site scripting (XSS) attacks via saved emails.

The Impact of CVE-2023-26091

As the vulnerability permits XSS attacks via saved emails, malicious actors could potentially inject and execute scripts on the victim's web browser, leading to unauthorized actions and data theft.

Technical Details of CVE-2023-26091

In this section, we will outline the technical aspects of CVE-2023-26091, including vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability in the frp_form_answers extension for TYPO3 allows for XSS attacks through saved emails, posing a risk to the integrity and security of affected systems.

Affected Systems and Versions

All versions of the frp_form_answers extension before 3.1.2 and 4.x before 4.0.2 are impacted by CVE-2023-26091, making users of these versions vulnerable to XSS attacks.

Exploitation Mechanism

By exploiting this vulnerability, an attacker can craft malicious code within saved emails, which, when executed by a user interacting with the affected extension, can lead to the execution of unauthorized scripts on the victim's browser.

Mitigation and Prevention

Mitigating the risks associated with CVE-2023-26091 requires immediate action to secure systems and prevent potential exploitation of the vulnerability.

Immediate Steps to Take

Users of TYPO3 should update the frp_form_answers extension to versions 3.1.2 or 4.0.2 to patch the vulnerability and prevent XSS attacks through saved emails. Additionally, it is advisable to sanitize user input and validate email content to mitigate the risk of XSS vulnerabilities.

Long-Term Security Practices

In the long run, maintaining regular security audits, staying informed about security advisories, and educating users on safe email handling practices can help enhance the overall security posture and prevent future vulnerabilities.

Patching and Updates

Regularly checking for security updates and promptly applying patches provided by TYPO3 for the affected extension is crucial in safeguarding systems against potential threats. Stay vigilant about security announcements and ensure timely implementation of security fixes to mitigate risks effectively.