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Add a reference page listing every crs-setup.conf setting with its default, enforcing rule, and when to change it. Update passages that still showed the single phase:2 SecDefaultAction: CRS 4.28.0 sets a default for phases 1-5. Note that UTF-8 validation is now on by default, document the _method override toggle (900210/920650), and point out that application/*+json and AWS JSON content types are auto-allowed since 4.30.0 (rules 901360/901370). Bump crs_latest_release to 4.30.0. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016dPLzCS17k6fiP7qf35iZi
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📝 Walkthrough
Merge Risk: ⚪ Minimal · up to
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| Check name | Status | Explanation | Resolution |
|---|---|---|---|
| Ai Contribution Disclosure |  |
## ai disclosure, ## what, ## why, or ## refs sections. It includes a Claude Code session link, and the… |
Add lowercase ## what, ## why, and ## refs sections. Add ## ai disclosure with concrete **tools used** including the model and version, **assisted with** describing the generated content, and **review performed** describing sp… |
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Check name Status Explanation Title check The title clearly identifies the main changes: adding a configuration settings reference and synchronizing the documentation with CRS 4.30.0. Description check The description explains the proposed changes, provides relevant context, and includes a test plan with reported results. It uses Summary and Test plan headings instead of the template headings, but i… Docstring Coverage No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0… Linked Issues check Check skipped because no linked issues were found for this pull request. Out of Scope Changes check Check skipped because no linked issues were found for this pull request. Regex Assembly Is The Source Of Truth Not applicable. The pull request changes no rules/*.conffile and no file underregex-assembly/.Rule Change Requires Go-Ftw Test Coverage Not applicable: the pull request changes only documentation, configuration metadata, and lychee.toml. It adds or modifies noSecRuleinrules/*.conforplugins/*.conf, and changes no pattern u…Redos Risk & Re2 Compatibility Not applicable. The pull request changes documentation, configuration metadata, and lychee.toml; it does not add or modify@rxpatterns inrules/*.conf,regex-assembly/*.ra, or `regexp.MustCom…False Positive Risk & Existing Coverage Not applicable. The pull request changes documentation, configuration metadata, and link-checker settings only. It does not add or widen a detection pattern, or add a rule, in rules/.conf, plugins/.… Crs Rule Metadata & Id Conventions Not applicable. The pull request changes documentation, configuration metadata, and lychee.toml only. It does not add or modify a SecRule in rules/.conf, plugins/.conf, or crs-setup.conf.example. Rule & Config Breaking Changes PASS — the PR changes only documentation, the Hugo release metadata, and the link-checker exclusion. The authoritative diff contains no CRS rule files, crs-setup.conf.example,.datafiles, tags/me…Owasp Security (Web, Api & Llm) No OWASP security issue is introduced by this documentation-only change. The new guidance preserves secure defaults: anomaly scoring remains the default, response-rule RFDoS risk remains warned at `co… Unpinned Dependencies & Actions Passed — not applicable. The pull request changes documentation, config/_default/config.toml, andlychee.toml. It does not change a listed dependency manifest, lockfile, Dockerfile, workflow, pipe…Secrets, Payloads & Pii In Logs PASS — The pull request changes documentation, site metadata, and a link-checker exclusion only. The added SecDefaultActionexamples documentlog/auditlog, but they do not emit logs or add reque…New Dependency Scrutiny No new dependency entry, GitHub Action, or Buildkite plugin is introduced. The PR changes only documentation/configuration files and lychee.toml; no listed dependency manifest or workflow file is ch…Install & Build-Time Code Execution No flagged install or build-time code execution was introduced. The PR changes Markdown, TOML documentation/configuration, and a link-checker exclusion only; the diff contains no new or changed CI wor… Renovate: Config Present And Valid PASS — The PR touches the repository root via lychee.toml, so the scan scope applies. However, no Renovate config file is changed, andrenovate.jsonexists in the PR tree. The check therefore does…Full details: Description check
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Explanation
The description explains the proposed changes, provides relevant context, and includes a test plan with reported results. It uses Summary and Test plan headings instead of the template headings, but it contains the required information and is sufficiently complete.
Full details: Docstring Coverage
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Explanation
No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0 files. (2 skipped: 2 unsupported.)
Full details: Rule Change Requires Go-Ftw Test Coverage
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Explanation
Not applicable: the pull request changes only documentation, configuration metadata, and
lychee.toml. It adds or modifies noSecRuleinrules/*.conforplugins/*.conf, and changes no pattern underregex-assembly/.
Full details: Redos Risk & Re2 Compatibility
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Explanation
Not applicable. The pull request changes documentation, configuration metadata, and
lychee.toml; it does not add or modify@rxpatterns inrules/*.conf,regex-assembly/*.ra, orregexp.MustCompile/re.compilecalls in tooling code.
Full details: False Positive Risk & Existing Coverage
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Explanation
Not applicable. The pull request changes documentation, configuration metadata, and link-checker settings only. It does not add or widen a detection pattern, or add a rule, in rules/.conf, plugins/.conf, or regex-assembly/.
Full details: Rule & Config Breaking Changes
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Explanation
PASS — the PR changes only documentation, the Hugo release metadata, and the link-checker exclusion. The authoritative diff contains no CRS rule files,
crs-setup.conf.example,.datafiles, tags/messages, paranoia levels, or Go/Python tooling APIs. Thecrs_latest_releasechange is documentation-site metadata, not a CRS deployment default. Therefore none of the specified breaking-change conditions is introduced.
Full details: Owasp Security (Web, Api & Llm)
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Explanation
No OWASP security issue is introduced by this documentation-only change. The new guidance preserves secure defaults: anomaly scoring remains the default, response-rule RFDoS risk remains warned at
content/1-getting-started/1-1-crs-installation.md:100-108, and unsupported content types are explicitly warned against unless the correct body processor is forced atcontent/2-how-crs-works/2-5-configuration-settings.md:85-90. The CRS source confirms rules 901360 and 901370 both allow the documented JSON types and force the JSON processor (coreruleset commit30cb436b261a9f5ec32a5a0677e17f3cfa1a8739,rules/REQUEST-901-INITIALIZATION.conf:402-454). The_methodsetting is disabled by default and the documentation identifies rule 920650 at PL2 (.../2-5-configuration-settings.md:68-70). No credentials, authentication logic, authorization logic, endpoints, dependencies, or executable security behavior changed.
Full details: Unpinned Dependencies & Actions
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Explanation
Passed — not applicable. The pull request changes documentation,
config/_default/config.toml, andlychee.toml. It does not change a listed dependency manifest, lockfile, Dockerfile, workflow, pipeline, or other covered dependency file, so no pinning check is required.
Full details: Secrets, Payloads & Pii In Logs
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Explanation
PASS — The pull request changes documentation, site metadata, and a link-checker exclusion only. The added
SecDefaultActionexamples documentlog/auditlog, but they do not emit logs or add request, response, payload, credential, token, IP, or telemetry data. No log artifacts, captured traffic, stack traces, or full-object logging changes are present.
Full details: New Dependency Scrutiny
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Explanation
No new dependency entry, GitHub Action, or Buildkite plugin is introduced. The PR changes only documentation/configuration files and
lychee.toml; no listed dependency manifest or workflow file is changed, and the added lines contain nouses:or plugin reference.
Full details: Install & Build-Time Code Execution
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Explanation
No flagged install or build-time code execution was introduced. The PR changes Markdown, TOML documentation/configuration, and a link-checker exclusion only; the diff contains no new or changed CI workflow, shell script, Dockerfile, package lifecycle script, Terraform provisioner, Go checksum bypass, or unpinned remote package/binary installation.
Full details: Renovate: Config Present And Valid
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Explanation
PASS — The PR touches the repository root via
lychee.toml, so the scan scope applies. However, no Renovate config file is changed, andrenovate.jsonexists in the PR tree. The check therefore does not trigger its validation checks.
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Full details: Ai Contribution Disclosure
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Explanation
⚠️ WARNING: The PR still fails the AI Contribution Disclosure policy. The PR body has no## ai disclosure,## what,## why, or## refssections. It includes a Claude Code session link, and the reviewed range containsCo-Authored-By: Claude Fable 5.1andClaude-Sessiontrailers in three commit messages. The change is material: 149 insertions across seven files, including a new 123-line reference page.Resolution
Add lowercase
## what,## why, and## refssections. Add## ai disclosurewith concrete**tools used**including the model and version,**assisted with**describing the generated content, and**review performed**describing specific verification. RemoveCo-Authored-By,Claude-Session, and other AI-tool signature lines from the PR body and every commit message.
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Deploying crs-documentation with
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| Latest commit: |
2eac1ca
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| Status: | ✅ Deploy successful! |
| Preview URL: | https://89da0ba8.documentation-km5.pages.dev |
| Branch Preview URL: | https://docs-crs-4-30-settings.documentation-km5.pages.dev |
The site currently returns 502 Bad Gateway, which fails the PR link check for an unrelated page. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016dPLzCS17k6fiP7qf35iZi
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Link checker was failing on https://www.debuggex.com/ (502 Bad Gateway, unrelated to this PR; the site is down). Added it to the lychee exclude list alongside the other flaky hosts. If it stays down, the Debuggex entries in 6-7-tools-for-rule-writers.md should be removed instead. |
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Actionable comments posted: 1
- 🪄 Fix comments: Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @content/2-how-crs-works/2-5-configuration-settings.md:
- Line 101: Update the `tx.crs_validate_utf8_encoding` table entry to name
`REQUEST_FILENAME`, `ARGS`, and `ARGS_NAMES` as the fields validated by rule
920250, rather than implying that it checks all request contents.
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ℹ️ Review info
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📒 Files selected for processing: 7
config/_default/config.tomlcontent/1-getting-started/1-1-crs-installation.mdcontent/2-how-crs-works/2-3-false-positives-and-tuning.mdcontent/2-how-crs-works/2-5-configuration-settings.mdcontent/3-about-rules/creating.mdcontent/5-advanced-topics/5-1-self-contained-mode.mdlychee.toml
🔗 Linked repositories identified
CodeRabbit considers these linked repositories for cross-repo context during reviews:
coreruleset/coreruleset(manual)coreruleset/go-ftw(manual)coreruleset/crs-toolchain(manual)coreruleset/crs-linter(manual)coreruleset/documentation(manual)
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Double-checked debuggex.com: the domain is registered until 2027, DNS resolves, and nginx answers with 502 Bad Gateway, so it is a backend outage rather than a dead site. The Wayback Machine has a working snapshot from 2026-09-26. The lychee exclusion is a temporary workaround; the Debuggex entries in the docs should stay. |
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016dPLzCS17k6fiP7qf35iZi
Co-authored-by: Max Leske <250711+theseion@users.noreply.github.com>
Summary
Compared the docs against CRS
origin/main(v4.30.0) and updated everything that drifted on settings.2-how-crs-works/2-5-configuration-settings.md: a reference for every900xxxsetting incrs-setup.confwith variable, default, enforcing rule, and when to change it.phase:2line. Since 4.28.0 the setup file sets a default for phases 1-5 (#4675).tx.crs_validate_utf8_encoding) is enabled by default since 4.28.0 (#4647); rule 900950 now disables it._methodoverride toggletx.allow_method_override_parameter/ rule 920650 at PL2 (#4416) documented.application/*+jsonand AWSx-amz-jsontypes are auto-allowed with the JSON body processor since 4.30.0 (rules 901360/901370, #4775, #4828). Added a tip after example 9 in the tuning page.crs_latest_releasebumped 4.28.0 → 4.30.0.Test plan
hugo --minify --baseURL "/"builds, new page renders, refs resolve.github/workflows/english_test.shpassesorigin/main🤖 Generated with Claude Code
https://claude.ai/code/session_016dPLzCS17k6fiP7qf35iZi
Summary by CodeRabbit