Übersicht
Cloudflare WAF is one of the most widely deployed web application firewalls in the world, protecting millions of websites from common vulnerabilities and attacks. As part of Cloudflare's integrated security and performance platform, it offers seamless protection without the complexity of traditional WAF solutions.
The WAF uses a combination of OWASP ModSecurity Core Rule Set and Cloudflare's proprietary managed rules, updated continuously based on threat intelligence from their massive network. With presence in over 300 cities worldwide, Cloudflare can block attacks at the edge, close to the source.
Bewertungsaufschlüsselung
Hauptfunktionen
Managed Rulesets
Pre-configured rules from Cloudflare and OWASP that are automatically updated to protect against emerging threats.
Custom Rules
Create your own firewall rules using Cloudflare's expression language to block, challenge, or allow specific traffic patterns.
Rate Limiting
Protect against brute force attacks and API abuse by limiting request rates from specific IPs or patterns.
Bot Management
Advanced bot detection and mitigation using machine learning to distinguish good bots from malicious ones.
API Shield
Protect API endpoints with schema validation, mutual TLS, and anomaly detection.
Page Shield
Monitor and control third-party JavaScript to prevent supply chain attacks and data theft.
Vor- & Nachteile
Vorteile
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Generous free tier
The free plan includes basic WAF protection, making it accessible for small sites and testing.
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Easy setup with DNS-based routing
No server-side installation required - just change your DNS and you're protected.
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Integrated CDN and performance features
WAF comes bundled with CDN, DDoS protection, and performance optimization.
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Excellent global coverage
300+ PoPs worldwide ensure low latency and fast attack mitigation.
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Continuous rule updates
Managed rules are updated automatically based on global threat intelligence.
Nachteile
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Advanced features require expensive plans
Features like custom rules with regex and bot management require Business or Enterprise plans.
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Can be complex for fine-tuning
While setup is easy, optimizing rules to avoid false positives requires expertise.
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Limited visibility on free/Pro plans
Detailed analytics and logging require higher-tier plans.
Preise
Preismodell: Per domain / Per feature tier
Free
Basic WAF protection for personal sites
- 5 WAF custom rules
- Cloudflare Managed Ruleset (limited)
- Basic DDoS protection
- Shared SSL certificate
Pro
Enhanced protection for professional sites
- 20 WAF custom rules
- Full Cloudflare Managed Ruleset
- OWASP Core Ruleset
- Advanced DDoS protection
- Mobile optimization
Business
Advanced security for business-critical sites
- 100 WAF custom rules
- Custom WAF rules with full regex
- Uploaded WAF rules
- 100% uptime SLA
- PCI compliance support
Enterprise
Custom solutions for large organizations
- Unlimited WAF rules
- Advanced Bot Management
- API Shield
- Dedicated support
- Custom SLAs
Unser Urteil
Cloudflare WAF stands out as an excellent choice for most websites and applications. Its combination of easy setup, generous free tier, and integrated performance features makes it particularly appealing for small to medium businesses and developers.
The main trade-off is that advanced security features come at a premium price point. Organizations with complex security requirements or those needing granular control may find the Business or Enterprise tiers necessary, which significantly increases costs.
Our verdict: Best overall WAF for most use cases, especially if you value ease of use and integrated CDN/performance features.
CVE Coverage
Cloudflare Web Application Firewall can detect and block attacks matching 87K+ known CVEs based on its supported rule sets.
Coverage by Attack Type
Latest Blockable CVEs
| CVE | Severity |
|---|---|
| CVE-2026-4510 | MEDIUM |
| CVE-2026-4161 | MEDIUM |
| CVE-2026-4087 | MEDIUM |
| CVE-2026-4086 | MEDIUM |
| CVE-2026-4084 | MEDIUM |
| CVE-2026-4077 | MEDIUM |
| CVE-2026-4072 | MEDIUM |
| CVE-2026-4069 | MEDIUM |
| CVE-2026-4067 | MEDIUM |
| CVE-2026-4022 | MEDIUM |
Häufig gestellte Fragen
Does Cloudflare WAF work with WordPress?
Yes, Cloudflare WAF works excellently with WordPress. Simply point your domain's DNS to Cloudflare, and protection is automatic. Cloudflare also offers WordPress-specific optimizations and has managed rules specifically designed to protect WordPress sites from common attacks.
Can I use Cloudflare WAF with my existing hosting?
Absolutely. Cloudflare acts as a reverse proxy, so it works with any hosting provider. Your visitors connect to Cloudflare first, which filters malicious traffic before forwarding legitimate requests to your origin server.
What's the difference between Cloudflare WAF and DDoS protection?
While both protect your site, they serve different purposes. The WAF inspects HTTP/HTTPS traffic for application-layer attacks like SQL injection and XSS. DDoS protection handles volumetric attacks trying to overwhelm your site with traffic. Cloudflare includes both in all plans.
Ready to try Cloudflare Web Application Firewall?
Start with the free tier and upgrade as you grow.