CVE-2020-13762 : Vulnerability Insights and Analysis

In Joomla! before 3.9.19, incorrect input validation of the module tag option in com_modules allows XSS.

Understanding CVE-2020-13762

In this CVE, Joomla! versions prior to 3.9.19 are vulnerable to XSS due to inadequate input validation in the module tag option within com_modules.

What is CVE-2020-13762?

This CVE identifies a security issue in Joomla! that enables cross-site scripting (XSS) attacks through the module tag option in com_modules.

The Impact of CVE-2020-13762

The vulnerability can be exploited by attackers to inject malicious scripts into web pages viewed by users, potentially leading to unauthorized access or data theft.

Technical Details of CVE-2020-13762

Joomla! before version 3.9.19 is susceptible to XSS attacks due to improper input validation in the module tag option within com_modules.

Vulnerability Description

The vulnerability arises from inadequate validation of user-supplied data in the module tag option, allowing malicious scripts to be executed in the context of the user's browser.

Affected Systems and Versions

Product: Joomla!
Versions Affected: Before 3.9.19

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting crafted scripts into the module tag option, which are then executed when the affected page is viewed by a user.

Mitigation and Prevention

To address CVE-2020-13762, immediate actions and long-term security practices are recommended.

Immediate Steps to Take

Update Joomla! to version 3.9.19 or later to mitigate the XSS vulnerability.
Regularly monitor Joomla! security advisories for any new updates or patches.

Long-Term Security Practices

Implement input validation and output encoding to prevent XSS attacks.
Educate users on safe browsing practices to minimize the risk of executing malicious scripts.

Patching and Updates

Apply security patches promptly to ensure that known vulnerabilities are addressed and system security is maintained.