The OWASP Top 10 lists the web application risks attackers exploit most, led by Broken Access Control and Injection. Years after publication, the same categories still cause breaches because they map to how applications are built, not to any single bug. Validated testing proves which of these an attacker could actually reach in your environment.

Every few years, the Open Worldwide Application Security Project (OWASP) updates its Top 10 list of the most significant web application security risks. The names of individual categories may change, and new attack techniques emerge, but one trend has remained remarkably consistent.

Attackers continue exploiting the same underlying weaknesses.

Broken Access Control, Injection, Cryptographic Failures, Security Misconfiguration, and Identification and Authentication Failures continue to appear in penetration tests, incident investigations, and real-world breaches. Not because developers ignore security, but because these risks are rooted in how modern applications are designed, integrated, and maintained.

For security teams, simply knowing the OWASP Top 10 is not enough. The real question is which of these weaknesses are actually exploitable in your own environment. That requires validation, not assumptions.

What the OWASP Top 10 is

The OWASP Top 10 is a community-driven awareness document that highlights the most common and impactful security risks affecting web applications. Maintained by the Open Worldwide Application Security Project (OWASP), it helps developers, security teams, and business leaders understand the attack patterns that continue to drive successful compromises.

The latest list includes categories such as:

• Broken Access Control
• Cryptographic Failures
• Injection
• Insecure Design
• Security Misconfiguration
• Vulnerable and Outdated Components
• Identification and Authentication Failures
• Software and Data Integrity Failures
• Security Logging and Monitoring Failures
• Server-Side Request Forgery (SSRF)

Rather than listing individual vulnerabilities, the OWASP Top 10 groups weaknesses into broader categories that reflect recurring design and implementation issues.

You can explore the latest guidance on the official OWASP Top 10 project page.

Why the same risks keep appearing

It would be easy to assume that after years of awareness, these risks would have disappeared.

They have not.

The reason is simple.

The OWASP Top 10 does not describe one-off software bugs. It describes recurring patterns in how applications are designed, how users access information, and how developers implement security controls.

Modern web applications are increasingly complex.

Applications integrate with APIs.

Cloud services exchange data continuously.

Third-party libraries accelerate development.

Authentication is distributed across multiple services.

Development teams release updates weekly or even daily.

Each change introduces opportunities for familiar weaknesses to reappear.

Attackers understand these patterns because they appear across almost every industry.

They are not searching for unusual vulnerabilities.

They are validating whether common weaknesses still exist.

Broken Access Control: The most common way attackers reach sensitive data

Broken Access Control consistently ranks among the most serious web application risks.

Access control determines what users are allowed to see and do after authentication.

When those controls fail, attackers may access information or functionality that should remain restricted.

Examples include:

• Viewing another user’s records
• Accessing administrative pages
• Modifying information without permission
• Bypassing role-based restrictions
• Performing privileged actions as a standard user

Authentication may function correctly.

The weakness lies in what happens after login.

Attackers spend significant time testing authorisation because these weaknesses often expose sensitive business data with relatively little effort.

Validated testing confirms whether these scenarios are genuinely exploitable rather than relying on assumptions about application logic.

Injection: Still one of the fastest paths to compromise

Injection vulnerabilities remain highly effective because they exploit how applications process untrusted input.

The best-known example is SQL Injection, where attacker-controlled input influences database queries.

Other forms include:

• Command Injection
• LDAP Injection
• NoSQL Injection
• Expression Language Injection

Modern development frameworks have reduced many traditional injection issues, but they have not eliminated them.

Poor input handling, unsafe query construction, and insecure integrations continue to introduce exploitable conditions.

Rather than asking whether injection appears theoretically possible, validated testing attempts to prove whether malicious input can actually influence application behaviour.

Evidence matters more than assumptions.

Cryptographic Failures: When protecting data is not enough

Cryptography is intended to protect sensitive information.

Weak implementation often achieves the opposite.

Cryptographic Failures commonly involve:

• Weak encryption algorithms
• Poor key management
• Sensitive information transmitted without encryption
• Insecure password storage
• Improper certificate validation

From an attacker’s perspective, encryption is only valuable if it is implemented correctly.

A strong algorithm combined with poor key management still creates exploitable opportunities.

Validated testing confirms whether sensitive information remains adequately protected throughout the application’s operation rather than simply verifying that encryption exists.

The gap between a scanner flag and a validated exploit

Automated scanners play an important role in application security.

They quickly identify known weaknesses, outdated software, and common misconfigurations.

However, scanners generally answer one question.

Does something look unusual?

Attackers ask a different question.

Can I exploit it?

Consider two findings.

A scanner reports a possible injection vulnerability.

Another scanner identifies a missing security header.

Neither finding automatically represents immediate organisational risk.

Validation determines whether:

• Input manipulation changes application behaviour.
• Access controls can be bypassed.
• Sensitive information becomes accessible.
• Business logic can be abused.
• Authentication protections can be circumvented.

This distinction allows security teams to prioritise evidence rather than theoretical observations.

How exploitability changes prioritisation

Security teams rarely struggle with a shortage of findings.

The challenge is deciding where to focus first.

A vulnerability with a high severity score may have no practical attack path.

A lower-severity issue may expose customer records directly to unauthorised users.

Exploitability changes the conversation.

Rather than prioritising solely by vulnerability scores, organisations should evaluate:

• Internet accessibility
• Authentication requirements
• Business impact
• Ease of exploitation
• Data sensitivity
• Existing security controls

Validated testing provides the evidence needed to make these decisions confidently.

Instead of asking, “How many vulnerabilities do we have?”, organisations can ask, “Which weaknesses could attackers actually use today?”

Continuous validation, not a once-a-year test

Applications rarely remain unchanged for long.

New features are released.

Third-party components are updated.

Cloud infrastructure evolves.

Developers modify application logic.

Each change has the potential to introduce new weaknesses.

Annual penetration tests remain valuable, but they represent a snapshot in time.

Continuous validation provides ongoing confidence that web application security keeps pace with application development.

Discovery identifies newly exposed applications.

Validation confirms whether known attack techniques remain exploitable.

Remediation reduces exposure.

The cycle repeats as applications evolve.

This approach aligns security testing with modern development rather than annual compliance schedules.

Learn more about Attack Insights’ web application security capabilities and how they support continuous validation of internet-facing applications.

If your organisation also exposes APIs, our API security platform helps validate API-specific attack paths alongside traditional web application testing.

Focus on what attackers can actually exploit

The OWASP Top 10 continues to matter because it reflects how attackers operate, not because it lists every possible vulnerability.

Broken Access Control, Injection, and Cryptographic Failures continue appearing because they stem from recurring development patterns rather than isolated defects.

Knowing the categories is valuable.

Validating whether they are exploitable in your own applications is what reduces risk.

Attack Insights helps organisations continuously validate web application security by proving which OWASP Top 10 risks attackers could actually exploit, enabling security teams to prioritise remediation based on evidence rather than assumptions.

Request a Demo

Understanding the OWASP Top 10 is only the first step. Knowing which weaknesses are actually exploitable in your environment is what improves security.

Request a demo of Attack Insights to see how our web application security platform continuously validates internet-facing applications, confirms exploitable attack paths, and helps your team prioritise remediation with confidence.

FAQ

What is the OWASP Top 10?

The OWASP Top 10 is a community-maintained awareness document published by the Open Worldwide Application Security Project. It highlights the web application security risk categories attackers exploit most frequently, helping organisations prioritise testing and remediation against common weaknesses.

What is Broken Access Control?

Broken Access Control occurs when users can access data, functions, or actions they should not be authorised to reach. Attackers commonly exploit these weaknesses to view sensitive information, perform privileged actions, or bypass role-based restrictions.

Why do the same OWASP risks keep causing breaches?

The OWASP Top 10 reflects recurring weaknesses in application design, authentication, authorisation, and input handling rather than isolated software bugs. As applications evolve, these patterns continue to reappear, creating opportunities for attackers.

How is validated testing different from a scan?

Automated scanners identify possible weaknesses based on known patterns. Validated testing goes further by proving whether those weaknesses are actually exploitable in a real application, allowing security teams to prioritise remediation based on evidence.