The OWASP Top 10 is the reference standard for the most critical web application security risks. Adopting the OWASP Top 10 is perhaps the most effective first step towards changing your software development culture focused on producing secure code.

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In this edition of the Top Ten 2025, there are 248 CWEs within the 10 categories. There are a total of 968 CWEs in the downloadable dictionary from MITRE at the time of this release. Similar to what we did for the 2021 edition, we leveraged CVE data for Exploitability and (Technical) Impact. We downloaded OWASP ...

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OWASP has developed several specialized Top 10 lists to address security concerns in specific domains: OWASP Web Application Top 10: Identifies the most critical security risks affecting web applications.

Please note: These free exercises are intended for business users; access requires a business email. KONTRA's developer security training of OWASP Top 10 is inspired by real-world vulnerabilities and case studies, we have created a series of interactive application security training modules ...

It represents a broad consensus about the most critical security risks to web applications. It was started in 2003 to help organizations and developer with a starting point for secure development. Over the years it's grown into a pseudo standard that is used as a baseline for compliance, education, ...

January 28, 2026 - The current Top 10 list as of 2017 include the following website vulnerabilities: A1. Injection · A2. Broken Authentication · A3. Sensitive Data Exposure · A4. XML External Entities (XXE) A5. Broken Access Control · A6. Security Misconfiguration · A7. Cross-Site Scripting (XSS) A8. Insecure Deserialization · A9. Using Components with Known Vulnerabilities · A10. Insufficient Logging and Monitoring · It is important to understand that the OWASP Top 10 is not an exhaustive list of all current vulnerabilities.

October 2, 2025 - For everything from online tools ... through its website. The OWASP Top 10 provides rankings of—and remediation guidance for—the top 10 most critical web application security risks....

This category was added to the OWASP Top 10 list in 2021 because it was the top vulnerability voted in the OWASP Top 10 Community Survey. An SSRF vulnerability allows an attacker to access data on a remote resource based on an unauthenticated, custom URL.

An attacker might, for example, send a request for www.example.com/super-secret-data/, even though web users are not supposed to be able to navigate to that location, and get access to super secret data from the server's response. There are a number of possible mitigations for SSRF attacks, and one of the most important is to validate all URLs coming from clients. Invalid URLs should not result in a direct, raw response from the server. For a more technical and in-depth look at the OWASP Top 10, see the official report.

It outlines the most pressing security vulnerabilities in web applications, serving as a critical guide for organizations to identify and manage potential risks. Understanding and adhering to OWASP Top 10 is not only good cyber practice but ...

The Open Web Application Security Project (OWASP) is a worldwide not-for-profit organization focused on improving the security of software. The OWASP Top Ten is a listing of the top ten risk categories for web applications security.

April 9, 2024 - The oldest of the OWASP Top 10 lists is the Web Application Security Top 10 and it is designed to address the 10 most critical web application security concerns. Much of this list focusses on protecting the types of applications that interact with via a web browser.

September 19, 2025 - The OWASP Top 10 List is a regularly updated document that identifies the ten most critical web application security risks, based on data collected from security organizations and practitioners worldwide. Published by the Open Web Application Security Project (OWASP), this resource serves as a foundational reference for developers, security teams, and enterprises working to secure web applications.

It represents a broad consensus about the most critical security risks to web applications. Start with the Introduction to learn about the OWASP Top 10:2021.

OWASP maintains a list of the ten most critical web application security risks, along with effective processes, procedures, and controls to mitigate them. OWASP also provides a list of the Top 10 API Security Risks to educate those involved in API development and maintenance and increase awareness of common API security weaknesses.

January 7, 2026 - Their Top 10 is a widely recognized report that outlines the 10 most critical web application security risks. It’s essentially a checklist of the most common weaknesses that could make your application a target for cyber threats. The OWASP Top 10 is all about risk management...

December 18, 2025 - Q: What is the most common vulnerability today? A: As of the latest update, Broken Access Control (A01) is the most prevalent and severe risk in web applications, now ranked first on the list.