Cloudflare Docs

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Overview
Concepts
WAF attack score
Uploaded content scanning
Custom rules
Create custom rules in the dashboard
Create custom rules via API
Configure a rule with the Skip action
API examples
Skip options
Manage custom rules in the dashboard
Custom rulesets
Use the dashboard
Use the API
Firewall rules
Rate limiting rules
Determining the rate
Create in the dashboard for a zone
Create in the dashboard for an account
Create via API
Rate limiting parameters
Rule examples
Best practices
Managed rules
Deploy in the dashboard for a zone
Deploy in the dashboard for an account
Deploy via API
Rulesets reference
Cloudflare Managed Ruleset
Cloudflare OWASP Core Ruleset
Cloudflare Exposed Credentials Check
Create WAF exceptions
Add an exception in the dashboard
Add an exception via API
Log the payload of matched rules
Configure payload logging in the dashboard
View the payload content in the dashboard
Configure payload logging via API
Command-line operations
Generate a key pair
Decrypt the payload content
Additional tools
IP Access rules
Create a rule
Parameters
Actions
User Agent Blocking
Zone Lockdown
Automated exposed credentials check
How exposed credentials checks work
Configure exposed credentials checks via API
Test your exposed credentials checks configuration
Monitor exposed credentials events
Security Analytics
Security Events
Free plan
Paid plans
Additional information
Reference
Alerts
Phases
Migration guides
Migrating to the new WAF Managed Rules
Firewall rules are becoming custom rules
Deprecation of old rate limiting
Troubleshooting
Bing's Site Scan blocked by a managed rule
Changelog
Scheduled changes
2023-05-02
2023-04-11
2023-03-20
2023-03-13
2023-03-06
2023-02-27
2023-02-13
2023-02-06
2023-01-30
2023-01-24
2023-01-16
2023-01-09
2022-12-12
2022-11-29
2022-11-14
2022-10-31
2022-10-18 - Emergency
2022-10-17
2022-10-14 - Emergency
2022-10-10
2022-10-03 - Emergency
2022-10-03
2022-09-20 – Emergency
2022-09-12
2022-09-05
2022-08-30
2022-08-22
2022-08-15
2022-08-01
2022-07-25
2022-07-18
2022-07-06
2022-07-05
2022-06-20
2022-06-10 – Emergency
2022-06-07 – Emergency
2022-06-06
2022-06-04 – Emergency
2022-06-03 – Emergency
2022-05-30
2022-05-16
2022-05-10 – Emergency
2022-05-09
2022-04-25
2022-04-20
2022-04-11
2022-04-04 – Emergency
2022-03-31 – Emergency
2022-03-29 – Emergency
2022-03-14
2022-03-07
2022-02-28
2022-02-21
2022-02-14
2022-01-24
2021-12-16 – Emergency
2021-12-14 – Emergency
2021-12-10 – Emergency
2021-11-01
2021-10-25
2021-10-19
2021-10-04
2021-09-06
2021-09-01 – Emergency
2021-08-31
2021-08-23
2021-08-16
2021-07-26
2021-07-19
2021-07-01 – Emergency
2021-06-21
2021-06-14
2021-06-07
2021-06-01
2021-04-21 – Emergency
2021-04-19
2021-03-22
2021-03-08
2021-03-06 – Emergency
2021-03-05 – Emergency
2021-03-01
2020-12-14
2020-12-02
2020-11-16
2020-11-05 – Emergency
2020-11-04 – Emergency
2020-10-19
2020-10-12
2020-10-05
2020-09-28
2020-09-21
2020-09-15
2020-09-07
2020-08-24
2020-09-01
2020-07-27
2020-08-03
2020-07-20
2020-07-07 – Emergency
2020-07-13
2020-06-22
2020-06-15
2020-06-08
2020-05-25
2020-05-11
2020-05-04
2020-04-27
2020-04-20
2020-04-06
2020-03-30
2020-03-23
2020-03-12
2020-03-09
2020-03-02 – Emergency
2020-02-17
2020-02-10
2020-01-27
2020-01-20
2020-01-16 – Emergency
2019-12-16
2019-11-25 – Emergency
2019-11-12
2019-11-07 – Emergency
2019-11-04
2019-10-27 – Emergency
2019-10-23 – Emergency
2019-10-21
2019-10-17 – Emergency
2019-10-14
2019-10-07
2019-09-30
2019-09-26 – Emergency
2019-09-16
Historical

WAF Managed Rules

WAF Managed Rules allow you to deploy pre-configured managed rulesets that provide immediate protection against:

Zero-day vulnerabilities
Top-10 attack techniques
Use of stolen/exposed credentials
Extraction of sensitive data

These managed rulesets are regularly updated. You can adjust the behavior of specific rules in these rulesets, choosing from several possible actions.

Cloudflare provides the following managed rulesets in the WAF:

Ruleset	Description
Cloudflare Managed Ruleset	Created by the Cloudflare security team, this ruleset provides fast and effective protection for all of your applications. The ruleset is updated frequently to cover new vulnerabilities and reduce false positives.
Cloudflare OWASP Core Ruleset	Cloudflare's implementation of the Open Web Application Security Project, or OWASP ModSecurity Core Rule Set. Cloudflare routinely monitors for updates from OWASP based on the latest version available from the official code repository.
Cloudflare Exposed Credentials Check	Deploy an automated credentials check on your end-user authentication endpoints. For any credential pair, the Cloudflare WAF performs a lookup against a public database of stolen credentials.
Cloudflare Free Managed Ruleset	Available on all Cloudflare plans. Designed to provide mitigation against high and wide impacting vulnerabilities. The rules are safe to deploy on most applications. If you deployed the Cloudflare Managed Ruleset for your site, you do not need to deploy this managed ruleset.

The following managed rulesets run in a response phase:

Ruleset	Description
Cloudflare Sensitive Data Detection (Beta)	Created by Cloudflare to address common data loss threats. These rules monitor the download of specific sensitive data — for example, financial and personally identifiable information. Available in Security > Data.