CVE-2021-3355 : What You Need to Know

A stored-self XSS vulnerability exists in LightCMS v1.3.4, enabling an attacker to execute HTML or JavaScript code via a vulnerable Title field to /admin/SensitiveWords.

Understanding CVE-2021-3355

This section will cover the details of CVE-2021-3355.

What is CVE-2021-3355?

CVE-2021-3355 is a stored-self XSS vulnerability in LightCMS v1.3.4, allowing malicious actors to execute HTML or JavaScript code through the Title field.

The Impact of CVE-2021-3355

The vulnerability could be exploited by attackers to inject malicious code, potentially leading to unauthorized access or data theft.

Technical Details of CVE-2021-3355

In this section, we will delve into the technical aspects of CVE-2021-3355.

Vulnerability Description

The vulnerability arises from inadequate input validation in the Title field, enabling the injection of malicious scripts.

Affected Systems and Versions

LightCMS v1.3.4 is confirmed to be affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this flaw by injecting malicious HTML or JavaScript code into the Title field to execute arbitrary code.

Mitigation and Prevention

This section will guide users on mitigating the risks associated with CVE-2021-3355.

Immediate Steps to Take

Users are advised to avoid inputting untrusted content into the vulnerable Title field to prevent exploitation.

Long-Term Security Practices

Implement secure coding practices, conduct regular security audits, and educate users on the importance of input validation.

Patching and Updates

It is crucial for users to apply patches and updates released by LightCMS to address the vulnerability and enhance the platform's security.