Get a complimentary pre-penetration test today. Check if you qualify in minutes!

What are the typical vulnerabilities and weaknesses that web application penetration testing can uncover?

icon Posted by: Praveen Joshi
icon July 5, 2023

In Brief

Web Application Penetration Testing

Web application penetration testing is a thorough methodical assessment of an online application’s security posture. A skilled testing team executes it with the goal of finding weaknesses that could be exploited by threat actors. It entails modeling actual attacks to evaluate the application’s resistance. To look for flaws in the planning, execution, and configuration of the application, penetration testers use a variety of techniques. This includes manual testing, automated tools, and specialized methodology. They concentrate on things like input verification, access controls, session management, and data security. Penetration testing helps organizations understand their security risks and take necessary action to minimize them. Also, it assures the confidentiality, integrity, and availability of the online application. Penetration testing does this by detecting and documenting vulnerabilities. The test results offer insightful information that may be used to strengthen the application’s security posture and safeguard critical data from breaches.


of web applications are susceptible to exposure to unauthorized access.


of vulnerabilities of all identified flaws within web applications are of high severity.


of the vulnerabilities are associated with flaws in the web application code.


of URLs hosted by shareware/torrent websites are malicious and threat ridden.

Top 10 Typical Vulnerabilities and Weaknesses in a Web Application

Web applications can be vulnerable to various types of vulnerabilities and weaknesses. You can uncover these vulnerabilities through web app pen testing. Here are some common ones:

1. Injection Attacks: When an attacker is able to insert malicious code or commands into an application’s input fields, they can sidestep input validation. Plus, they can affect the behavior of the application. These attacks include SQL injection and command injection.

2. Cross-Site Scripting (XSS): XSS flaws give hackers the ability to insert malicious scripts into web pages that users are viewing. This could eventually result in session hijacking, data theft, or the transmission of malware.

3. Cross-Site Request Forgery (CSRF): Hackers take advantage of the trust that exists between the user’s browser and the application. CSRF vulnerabilities allow them to deceive authenticated users into taking undesired actions on a web application.

4. Broken Authentication and Session Management: Unauthorized access, session hijacking, or account breach might result from weak authentication measures. Improper session handling or poor password management are also among the root causes behind this.

5. Insecure Direct Object References (IDOR): IDOR flaws emerge when an attacker can change references to internal resources or objects. It gives them unauthorized access to confidential information or functionality.

6. Security Misconfigurations: Sensitive information may be exposed, unauthorized access may be granted, or known vulnerabilities may be exploited by attackers. These are all ways to get into web servers, databases, or frameworks with improper configuration.

7. Cross-Origin Resource Sharing (CORS) Issues: Unauthorized cross-domain requests may result from improperly implemented CORS policies. It may allow attackers the ability to operate on behalf of authorized users.

8. File Upload Vulnerabilities: Unauthorized access to the server, denial of service, or arbitrary code execution are all possible outcomes of this vulnerability. Insufficient file validation or filtering before they are uploaded can cause catastrophic consequences.

9. XML External Entity (XXE) Attacks: Attackers can use XXE flaws to take advantage of improperly configured XML parsers. This might result in the leakage of confidential data, server-side request spoofing, or denial of service.

10. Unvalidated Redirects and Forwards: Attackers may be able to send users to malicious websites or carry out phishing attacks through the insecure handling of redirects and forwards.

You can effectively uncover these vulnerabilities if you penetration test web application on a regular basis.

How Web App Pen Testing Can Help?

Penetration testing for web applications is essential for locating and removing vulnerabilities. It assists in identifying vulnerabilities and possible points of entry for attackers by simulating actual attacks. To find flaws in the architecture, configuration, and code of an application, penetration testers employ a combination of manual methods and automated technologies. They take advantage of these weaknesses to estimate the possible damage and offer practical suggestions for repair.

Additionally, penetration testing allows businesses to proactively identify and fix security problems, ensuring that the right security measures are put in place. Through this procedure, the application’s resilience is improved, and sensitive data is protected. Plus, potential security breaches or unauthorized access by malevolent parties are also avoided.

Before You Go!

  • Executing a penetration test on web applications can be a tricky task if you don’t have the experience for it.
  • So, you can get help from cyber security consulting firms that provide expert web app penetration testing.


  • web app penetration testing
  • web app security
  • web application pentesting

Let's talk about your project

Banner Banner

Get Secured Today

Request an audit

Locate Us

Headquarter Anerley Court, Half Moon Lane, Hidenborough, Kent, TN11 9HU,
Contact: +44(0) 1732 833111
UAE Concord Tower, 6th Floor, Dubai Media City, 126732
Dubai, UAE.
Contact: +971 (0) 4 454 9844
USA 580 Fifth Avenue, Suite 820
New York, NY 10036
India Plot No.14, 5th Floor, Sector-18, Gurugram -122015 Haryana,
Contact: +91(0) 124 4201376
+44 789 707 2660

Choose Expert guidance to patch vulnerabilities.

Let's talk security today.

How can we help ?
How can we help ?

Choose hacker style methodologies over fear.

Let's talk security today.

How can we help ?
How can we help ?

We'd Love to Hear From You