CVE-2019-12823 : Security Advisory and Response

Craft CMS before version 3.1.31 is susceptible to XSS attacks due to inadequate filtering of XML feeds.

Understanding CVE-2019-12823

Craft CMS version 3.1.31 and earlier versions are vulnerable to Cross-Site Scripting (XSS) attacks.

What is CVE-2019-12823?

Craft CMS versions prior to 3.1.31 lack proper filtering of XML feeds, leaving them open to XSS vulnerabilities.

The Impact of CVE-2019-12823

This vulnerability could allow attackers to inject malicious scripts into web pages viewed by users, leading to potential data theft or manipulation.

Technical Details of CVE-2019-12823

Craft CMS vulnerability details and affected systems.

Vulnerability Description

Craft CMS versions before 3.1.31 fail to adequately filter XML feeds, creating an XSS risk.

Affected Systems and Versions

Product: Craft CMS
Vendor: Not applicable
Vulnerable Versions: All versions before 3.1.31

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts through unfiltered XML feeds, compromising the security of the system.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2019-12823.

Immediate Steps to Take

Update Craft CMS to version 3.1.31 or later to patch the XSS vulnerability.
Regularly monitor for security advisories and updates from Craft CMS.

Long-Term Security Practices

Implement input validation and output encoding to prevent XSS attacks.
Conduct regular security audits and penetration testing to identify and address vulnerabilities.

Patching and Updates

Apply security patches and updates promptly to ensure the system is protected against known vulnerabilities.