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CVE-2021-31930 : What You Need to Know

Discover the details of CVE-2021-31930, a persistent cross-site scripting (XSS) flaw in Concerto's web interface up to version 2.3.6, enabling unauthorized JavaScript injection.

Persistent cross-site scripting (XSS) in the web interface of Concerto through version 2.3.6 enables an unauthenticated remote attacker to inject arbitrary JavaScript via the First Name or Last Name parameter during registration. This allows the XSS payload to execute when a privileged user tries to delete the account.

Understanding CVE-2021-31930

This section provides detailed insights into the CVE-2021-31930 vulnerability.

What is CVE-2021-31930?

CVE-2021-31930 is a persistent cross-site scripting (XSS) vulnerability present in Concerto's web interface up to version 2.3.6, allowing unauthorized users to execute malicious JavaScript code.

The Impact of CVE-2021-31930

The vulnerability permits remote attackers to introduce and execute arbitrary XSS payloads, potentially leading to unauthorized access and data manipulation.

Technical Details of CVE-2021-31930

Explore the technical aspects associated with CVE-2021-31930 below.

Vulnerability Description

The vulnerability allows malicious actors to insert XSS payloads via the First Name or Last Name parameter during registration, leading to unauthorized code execution upon account deletion.

Affected Systems and Versions

Concerto versions up to 2.3.6 are impacted by this XSS vulnerability.

Exploitation Mechanism

Remote attackers inject malicious JavaScript code via registration form fields, enabling the XSS payload to trigger when a privileged user attempts account deletion.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2021-31930 below.

Immediate Steps to Take

Ensure Concerto is updated to the latest version and restrict access to registration and account deletion functionalities.

Long-Term Security Practices

Implement secure coding practices, perform regular security audits, and educate users on identifying and preventing XSS attacks.

Patching and Updates

Apply patches released by Concerto promptly to address the vulnerability and enhance system security.

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