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CVE-2020-15276 Explained : Impact and Mitigation

Learn about CVE-2020-15276, a Cross-Site Scripting vulnerability in baserCMS versions before 4.4.1. Understand the impact, affected systems, and mitigation steps to secure your environment.

baserCMS before version 4.4.1 is vulnerable to Cross-Site Scripting, allowing arbitrary JavaScript execution through crafted nicknames in blog comments.

Understanding CVE-2020-15276

This CVE identifies a Cross-Site Scripting vulnerability in baserCMS versions prior to 4.4.1.

What is CVE-2020-15276?

CVE-2020-15276 is a security flaw in baserCMS that enables attackers to execute arbitrary JavaScript by inserting a malicious nickname in blog comments.

The Impact of CVE-2020-15276

The vulnerability poses a high severity risk with a CVSS base score of 7.7, affecting confidentiality, integrity, and requiring low privileges for exploitation.

Technical Details of CVE-2020-15276

This section delves into the specifics of the vulnerability.

Vulnerability Description

The issue allows for Cross-Site Scripting (XSS) attacks through the blog comment component, fixed in version 4.4.1.

Affected Systems and Versions

        Product: basercms
        Vendor: baserproject
        Versions Affected: >= 4.0.0, < 4.4.1

Exploitation Mechanism

        Attack Complexity: High
        Attack Vector: Network
        User Interaction: Required
        Scope: Changed
        Privileges Required: Low

Mitigation and Prevention

Protecting systems from this vulnerability is crucial.

Immediate Steps to Take

        Upgrade baserCMS to version 4.4.1 to mitigate the risk.
        Avoid entering crafted nicknames in blog comments.

Long-Term Security Practices

        Regularly update baserCMS to the latest version.
        Educate users on safe commenting practices to prevent XSS attacks.

Patching and Updates

Stay informed about security advisories and promptly apply patches to address known vulnerabilities.

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