# OWASP Top 10 2025: What Changed and Why It Matters

> Comprehensive analysis of OWASP Top 10:2025 changes, including new entries and modern security risks for web applications.

**URL:** https://www.ciptadusa.com/blog/owasp-top-10-2025-changes-analysis  
**Type:** blog  
**Author:** PT Cipta Dua Saudara  
**Category:** Application Security  
**Published:** 2026-05-30  
**Cover:** https://www.ciptadusa.com/media/defaults/blog-cover.svg  

## Article

# OWASP Top 10 2025: What Changed and Why It Matters

## Overview

The Open Web Application Security Project (OWASP) has released the 2025 edition of its influential Top 10 Web Application Security Risks. This updated list reflects the evolving threat landscape and provides developers with actionable guidance for building secure applications.

## Key Changes in 2025

### New Entries and Reshuffling

The 2025 list introduces significant changes:

1. **A01:2025 - Broken Access Control** (maintained top position)
2. **A02:2025 - Security Misconfiguration** (moved up)
3. **A03:2025 - Software Supply Chain Failures** (NEW)
4. **A04:2025 - Cryptographic Failures** (renamed, refined)
5. **A05:2025 - Injection** (maintained)
6. **A06:2025 - Insecure Design** (moved up)
7. **A07:2025 - Authentication Failures** (refined)
8. **A08:2025 - Software or Data Integrity Failures** (expanded)
9. **A09:2025 - Logging and Monitoring Failures** (maintained)
10. **A10:2025 - Server-Side Request Forgery** (maintained)

### Notable Changes

#### Software Supply Chain Failures (A03:2025)

This new entry reflects the growing threat of supply chain attacks:

- **Dependency Confusion**: Malicious packages in public repositories
- **Build System Compromises**: Attacks on CI/CD pipelines
- **Third-party Component Vulnerabilities**: Unpatched dependencies

```python
# Example: Dependency confusion attack
# requirements.txt
requests==2.28.0
# Attacker publishes malicious 'requests' package with higher version
# pip install requests==2.28.1  # Installs malicious version
```

#### Insecure Design (A06:2025)

Expanded emphasis on security-by-design principles:

- Threat modeling during design phase
- Secure design patterns
- Security architecture reviews

## Detailed Analysis of Top Risks

### A01:2025 - Broken Access Control

**Why #1**: Access control failures remain the most common vulnerability.

Common issues:
- Violation of principle of least privilege
- Bypassing access control checks
- Viewing or editing someone else's account
- Accessing API without access controls

```javascript
// Example: Broken access control
app.get('/api/user/:id', async (req, res) => {
    // Vulnerable: No check if user can access this profile
    const user = await User.findById(req.params.id);
    res.json(user);
});

// Secure implementation
app.get('/api/user/:id', async (req, res) => {
    const user = await User.findById(req.params.id);
    if (!user || user.id !== req.user.id) {
        return res.status(403).json({ error: 'Forbidden' });
    }
    res.json(user);
});
```

### A02:2025 - Security Misconfiguration

**Why it moved up**: Cloud-native applications increase misconfiguration risks.

Common misconfigurations:
- Default credentials
- Unnecessary features enabled
- Missing security headers
- Overly permissive CORS

```python
# Django security settings
SECURE_BROWSER_XSS_FILTER = True
SECURE_CONTENT_TYPE_NOSNIFF = True
SESSION_COOKIE_SECURE = True
CSRF_COOKIE_SECURE = True
X_FRAME_OPTIONS = 'DENY'
```

### A03:2025 - Software Supply Chain Failures

**Why new**: High-profile attacks (SolarWinds, Log4Shell) demonstrated impact.

Mitigation strategies:
- Software Bill of Materials (SBOM)
- Dependency scanning
- Signed packages
- Reproducible builds

```json
{
  "scripts": {
    "audit": "npm audit",
    "check-updates": "npx npm-check-updates"
  }
}
```

### A04:2025 - Cryptographic Failures

**Renamed from A02:2021**: Better reflects the specific nature of failures.

Common failures:
- Using weak algorithms (MD5, SHA1)
- Hardcoded keys
- Insufficient key management
- Missing encryption for sensitive data

```go
// Insecure: Using weak hash
hash := md5.Sum(password)

// Secure: Using strong hash
import "golang.org/x/crypto/bcrypt"
hash, err := bcrypt.GenerateFromPassword(password, bcrypt.DefaultCost)
```

### A05:2025 - Injection

**Maintained position**: Injection attacks remain prevalent.

Types:
- SQL Injection
- NoSQL Injection
- OS Command Injection
- LDAP Injection

```php
// Vulnerable to SQL injection
$query = "SELECT * FROM users WHERE username = '$_GET[username]'";

// Secure: Using prepared statements
$stmt = $pdo->prepare("SELECT * FROM users WHERE username = :username");
$stmt->execute(['username' => $_GET['username']]);
```

### A06:2025 - Insecure Design

**Why moved up**: Design flaws are harder to fix than implementation bugs.

Mitigation:
- Threat modeling
- Secure design patterns
- Reference architectures
- Security user stories

### A07:2025 - Authentication Failures

**Refined scope**: Focus on implementation weaknesses.

Common failures:
- Weak password requirements
- Missing MFA
- Session fixation
- Credential stuffing susceptibility

```javascript
// Secure authentication implementation
const rateLimit = require('express-rate-limit');
const bcrypt = require('bcrypt');

const loginLimiter = rateLimit({
    windowMs: 15 * 60 * 1000,
    max: 5,
    message: 'Too many login attempts'
});

app.post('/login', loginLimiter, async (req, res) => {
    const user = await User.findOne({ email: req.body.email });
    if (!user || !await bcrypt.compare(req.body.password, user.password)) {
        return res.status(401).json({ error: 'Invalid credentials' });
    }
    // Regenerate session
    req.session.regenerate(() => {
        req.session.userId = user.id;
        res.json({ message: 'Logged in' });
    });
});
```

### A08:2025 - Software or Data Integrity Failures

**Expanded**: Now includes CI/CD pipeline security.

Risks:
- Unsigned updates
- Insecure CI/CD pipelines
- Auto-update without verification

### A09:2025 - Logging and Monitoring Failures

**Maintained**: Still critical for incident response.

Requirements:
- Log security events
- Implement monitoring
- Establish incident response
- Regular log review

### A10:2025 - Server-Side Request Forgery

**Maintained**: Cloud environments increase SSRF risks.

```python
# Vulnerable to SSRF
import requests

def fetch_url(url):
    return requests.get(url).text

# Secure: Validate and restrict URLs
from urllib.parse import urlparse
import ipaddress

def secure_fetch_url(url):
    parsed = urlparse(url)
    
    # Block internal IPs
    try:
        ip = ipaddress.ip_address(parsed.hostname)
        if ip.is_private or ip.is_loopback:
            raise ValueError("Internal URLs not allowed")
    except ValueError:
        pass
    
    # Whitelist allowed domains
    allowed_domains = ['api.example.com', 'cdn.example.com']
    if parsed.hostname not in allowed_domains:
        raise ValueError("Domain not allowed")
    
    return requests.get(url, timeout=5).text
```

## Implementing OWASP Top 10 in Modern Frameworks

### Laravel (PHP)

```php
// Security configuration
// config/session.php
'secure' => true,
'http_only' => true,
'same_site' => 'lax',

// .env
SESSION_SECURE_COOKIE=true
SESSION_HTTP_ONLY=true
```

### Django (Python)

```python
# settings.py
SECURE_BROWSER_XSS_FILTER = True
SECURE_CONTENT_TYPE_NOSNIFF = True
SESSION_COOKIE_SECURE = True
CSRF_COOKIE_SECURE = True
SECURE_SSL_REDIRECT = True
```

### Express.js (JavaScript)

```javascript
const helmet = require('helmet');
const cors = require('cors');

app.use(helmet());
app.use(cors({
    origin: 'https://trusted-domain.com',
    credentials: true
}));
```

### Go (Fiber)

```go
app.Use(helmet.New())
app.Use(cors.New(cors.Config{
    AllowOrigins:     "https://trusted-domain.com",
    AllowCredentials: true,
}))
```

## Conclusion

The OWASP Top 10:2025 reflects the current threat landscape with emphasis on supply chain security, secure design, and cloud-native risks. Developers should integrate these principles throughout the software development lifecycle.

## References

- [OWASP Top 10:2025](https://owasp.org/Top10/2025/en/)
- [OWASP Top 10 Introduction](https://owasp.org/Top10/2025/0x00_2025-Introduction/)
- [OWASP Foundation](https://owasp.org/)

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