CVE-2021-41465 : What You Need to Know

A Cross-site scripting (XSS) vulnerability in concrete5-legacy 5.6.4.0 and below allows remote attackers to inject arbitrary web script or HTML.

Understanding CVE-2021-41465

An overview of the identified Cross-site scripting vulnerability in concrete5-legacy.

What is CVE-2021-41465?

CVE-2021-41465 is a Cross-site scripting (XSS) vulnerability found in concrete5-legacy 5.6.4.0 and earlier versions, enabling attackers to insert malicious web scripts or HTML through the rel parameter.

The Impact of CVE-2021-41465

The vulnerability in concrete/elements/collection_theme.php in concrete5-legacy 5.6.4.0 and below can result in remote code execution, unauthorized data access, and potential website defacement.

Technical Details of CVE-2021-41465

Insight into the technical aspects of the CVE.

Vulnerability Description

Type: Cross-site scripting (XSS)
Location: concrete/elements/collection_theme.php
Versions affected: concrete5 legacy 5.6.4.0 and prior

Affected Systems and Versions

Systems: concrete5-legacy
Versions: 5.6.4.0 and below

Exploitation Mechanism

Attack Vector: Remote
Parameter: rel

Mitigation and Prevention

Measures to address and mitigate the risk posed by CVE-2021-41465.

Immediate Steps to Take

Update concrete5-legacy to the latest version.
Apply security patches provided by the vendor.

Long-Term Security Practices

Implement input validation and output encoding to prevent XSS attacks.
Regular security audits and code reviews.
Educate developers on secure coding practices.

Patching and Updates

Monitor vendor advisories for security patches.
Keep systems and software up to date to address vulnerabilities promptly.