Decoding Cybersecurity: A Deep-Dive into Common Web Application Vulnerabilities


As the digital landscape advances and encompasses every single aspect of our day-to-day life, cybersecurity remains a top priority. Key to adhering to this priority is understanding the common web application vulnerabilities that every business and individual should be aware of. This post aims to deep-dive into this critical topic, helping you become better equipped to protect your digital interests.

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1. Cross-Site Scripting (XSS)

XSS is a vulnerability permitting attackers to inject malicious scripts into pages viewed by users. These scripts, once executed, can hijack user sessions, deface websites, or direct users to malicious websites. There are different types of XSS attacks: Stored XSS, Reflected XSS, and DOM-based XSS.

2. SQL Injection (SQLi)

SQLi involves an attacker exploiting a server’s database, either by directly injecting malicious SQL code for execution within a user’s query. The result can be disastrous, allowing the attacker to view, modify, and delete data in the database.

3. Cross-Site Request Forgery (CSRF)

CSRF manipulates a user into performing an undesired action without their consent in a web application in which they’re authenticated. It can lead to state-changing requests like changing a user’s email address or password or even performing funds transfer.

4. Security Misconfigurations

Common examples of security misconfigurations are unnecessary features enabled, default accounts with their passwords unchanged, improperly set file permissions, misconfigured HTTPS headers, and error messages containing sensitive information. These can provide access points that attackers can exploit.

5. Insecure Direct Object References (IDOR)

In an IDOR vulnerability, an attacker manipulates direct object references to gain unauthorized access to others’ resources. This attack is primarily due to inadequate access control mechanisms.

6. XML External Entity (XXE)

An XXE attack is a type of attack against a web application that parses XML input. It occurs when an application processes XML data that includes a reference to an external entity.

7. Unvalidated Redirects and Forwards

If a web application allows redirection to external sites, it could unwillingly aid phishing attacks or malicious redirects to other unintended destinations.

8. Server-Side Request Forgery (SSRF)

In an SSRF attack, an attacker tricks a web application into making a request to a server. This attack can lead to actions performed on internal resources that an attacker couldn't ordinarily access.

Securing Your Web Applications

The vulnerabilities mentioned above are only the tip of the iceberg. Web application vulnerabilities can be diverse in nature and constantly evolving, requiring continuous vigilance, comprehensive knowledge, and robust security measures. A secure-SDLC(Software Development Life Cycle) should be in place, incorporating security from the design phase onwards. In addition, applications should be regularly tested for security vulnerabilities using methods like SAST(Static Application security testing), DAST(Dynamic Application security testing) and Penetration testing.


In conclusion, understanding these common web application vulnerabilities is the first step towards securing your digital resources. Knowledge is power: recognizing the potential threats and taking actionable steps towards hardening your security measures is crucial for navigating the digital world. Security is not a one-time event but a continuous process, requiring investment in time, resources, and commitment. By doing so, we not only protect our interests but also contribute to a safer digital ecosystem for all.

John Price
Chief Executive Officer
October 6, 2023
9 minutes