What are the most common types of JavaScript vulnerabilities?

Some inherent security flaws for Javascript applications include: Cross-Site Scripting Vulnerabilities (XSS) Unintended Script Execution Source Code Vulnerabilities Exposure of Session Data Cross-Site Request Forgery (CSRF) Relying Only on Client-Side Validation Server-Side Javascript Injection Client-Side Logic Vulnerabilities

What are the impacts of JavaScript attacks?

Attackers primarily leverage JavaScript vulnerabilities to orchestrate client-side attacks. While JavaScript is a client-side application programming language, flaws in frameworks can also facilitate server-side attacks. Once a server is compromised, the attacker can inject arbitrary code into legitimate scripts, allowing them to access user behavior and browsing context data. In websites that lack user input and output validation, the server may potentially execute these malicious scripts, with far-reaching impacts including: Uncontrolled client application changes Exposure of sensitive information Execution of malicious code at the client-side

JavaScript Vulnerabilities Prevention Guide

Learn how to detect and prevent JavaScript Vulnerabilities and secure your web assets.

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In this whitepaper:

What are JavaScript Vulnerabilities?
Types of JavaScript Vulnerabilities?
JavaScript Vulnerabilities - What are the impacts?
Identifying JavaScript Vulnerabilities with Crashtest Security
JavaScript Vulnerabilities - Prevention Techniques
Best Practices in Preventing JavaScript Attacks
Crashtest Security‘s Vulnerability Scanner for safer Web Apps

Preview

With the adoption of nearly 98% of the world‘s websites, JavaScript is undoubtedly one of the popular programming languages used in modern web applications. By offering a wide range of libraries, open-source packages, and frameworks, JavaScript allows developers of any skill level to create complex websites with little overhead. While the feature-rich platform offers numerous benefits in developing dynamic websites and mobile applications, the platform is also infamous for being a prime target of attackers because of its inherent vulnerabilities.

This guide discusses common JavaScript security issues in JS applications, their types, organizational impacts, and mitigation strategies.

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