CVE-2020-23721 Explained : Impact and Mitigation

An issue was discovered in FUEL CMS V1.4.7 where an attacker can exploit a XSS vulnerability to bypass filters.

Understanding CVE-2020-23721

This CVE identifies a security flaw in FUEL CMS V1.4.7 that allows attackers to execute XSS attacks.

What is CVE-2020-23721?

CVE-2020-23721 is a vulnerability in FUEL CMS V1.4.7 that enables attackers to bypass filters using a crafted XSS payload.

The Impact of CVE-2020-23721

The vulnerability can lead to unauthorized execution of scripts, potentially compromising user data and system integrity.

Technical Details of CVE-2020-23721

This section provides technical insights into the vulnerability.

Vulnerability Description

The issue in FUEL CMS V1.4.7 allows attackers to inject malicious XSS payloads through the /fuelCM/fuel/pages/edit/1?lang=english endpoint.

Affected Systems and Versions

Affected Version: FUEL CMS V1.4.7
Other versions may also be susceptible to similar attacks.

Exploitation Mechanism

Attackers exploit the XSS vulnerability by inserting malicious payloads via the specified URL, evading security filters.

Mitigation and Prevention

Protect your systems from CVE-2020-23721 with these mitigation strategies.

Immediate Steps to Take

Disable the vulnerable endpoint or apply a security patch immediately.
Implement input validation and output encoding to mitigate XSS risks.

Long-Term Security Practices

Regularly update FUEL CMS to the latest secure version.
Conduct security audits and penetration testing to identify and address vulnerabilities.

Patching and Updates

Stay informed about security updates and apply patches promptly to prevent exploitation of known vulnerabilities.