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Top JavaScript Security Vulnerabilities
28 Apr 2022

Cybercrime is getting their hands deeper and deeper day by day. Due to weak security ends, we face cybercrime problems. Yes, cybercriminals basically know about the vulnerabilities of your website or software, and they simply work on them to finally get a grip on your system.

Once the cybercriminals are inside your system, they can do anything. They can get access to any of your personal information, and you might also end up facing heavy losses. Every cybercriminal has its own plan to try to hack that part of your computer from where it will be able to get access to its required information.

While programming software for your system, if the programmer leaves loose ends and doesn't secure the software with enough security, a cybercriminal can get access to your software at any time. These loose ends are the JavaScript security vulnerabilities you will learn more about in further detail.

What is JavaScript

JavaScript, often abbreviated JS, is a programming language that is one of the core technologies of the World Wide Web, alongside HTML and CSS. Over 97% of websites use JavaScript on the client side for web page behavior, often incorporating third-party libraries.

Some of the top JavaScript frameworks are React, Angular, Vue, RxJS, jQuery and NodeJs.

5 JavaScript security vulnerabilities to know about

No programming language is 100% secure. There will be vulnerabilities at some point in all types of programming languages. So, there will be loose ends even if we talk about JavaScript. Here are the top 5 JavaScript vulnerabilities:

1. Third-party security vulnerabilities

Using open library tools that would be open for everyone for JavaScript programming can also cause security problems. Not all the tools are being handled by international safest authorities and organizations, and using those tools might cause the hacker access to your system. So, you used a random tool from your browser and allowed the hacked to have access to your browser without you even knowing it.

2. Cross-site request forgery

Have you ever received any website that would look 100% authentic, and by allowing its access, you will be able to open it and use it for your benefit? Do you have any idea that a hacker can be behind that request? This happens a lot when you get tricked by the hackers and receive a request before you want to open any website. Once you allow them, that means the hacker has entered your system.

They will get a chance to have access to your modules, this can cause identity theft, and they can target your business websites just to cause any damage and loss to your company.

3. Cross-site scripting

Here the hacker will use your browser by getting into your system first, and then, on your behalf, they will manipulate the HTML and JavaScript scripts. Once they are done with the coding, they will launch a malicious payload. The script will be saved inside the browser for a lifetime, so it will get settled into the web pages. Whenever you use your browser, the manipulated script will get triggered, and the person who hacked your system will be able to get access to your company's information, which can cause a huge loss to companies.

4. Wrong input information

If you are using any website, are you sure that it is a valid website link and that there is nothing wrong with that website? Most of the time, the hackers access your system through these malicious websites. If someone wants to access your website, they must provide valid information, or they won't be able to complete the procedure of getting access to your website information. You need to make conditions just to tighten the security.

Most of the time, the hacker tries to use the wrong information to get into your system, and if the security is not good, then no one can stop them.

5. Unintentional and unknown script execution

A major security vulnerability of JavaScript is unintentional script execution, which causes cross-site scripting. The JavaScript model will allow scripts to get settled in the web pages, and every single time you open your browser, the malicious script will get triggered. This will help an unauthorized person to have access to your browser.

Final Words

No programming language is safe. No matter how safe your program, system or software is, the hackers will always find a way to get into your system and destroy everything. We have talked about only five javascript vulnerabilities above but just focus on them if you don't want any hacker access to your system.

PROTECTUMUS is a Website Security & Performance provider that combines AI and Machine Learning to detect attacks, protect against malware and recover in case of being hacked. Protectumus also protects web, desktop and mobile applications against JavaScript vulnerabilities and security threats.

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