feat(aws): support excluding regions from scans via CLI, env var, and config

[danibarranqueroo]

Context

AWS scans could hang or become very slow when a specific region was unresponsive, and the only workaround was removing that region from aws_regions_by_service.json, which is global and brittle.

Description

This PR adds support for excluding AWS regions from scans using:

• --excluded-region
• PROWLER_AWS_DISALLOWED_REGIONS
• aws.disallowed_regions in config.yaml

The exclusion logic now lives in AwsProvider, so it applies to both CLI scans and API/App-triggered scans. Precedence is:

1. CLI flag
2. Environment variable
3. Config file

It also adds documentation and regression tests for the new behavior.

Steps to review

Please add a detailed description of how to review this PR.

Checklist

Community Checklist

• This feature/issue is listed in here or roadmap.prowler.com
• Is it assigned to me, if not, request it via the issue/feature in here or Prowler Community Slack

• Review if the code is being covered by tests.
• Review if code is being documented following this specification https://github.com/google/styleguide/blob/gh-pages/pyguide.md#38-comments-and-docstrings
• Review if backport is needed.
• Review if is needed to change the Readme.md
• Ensure new entries are added to CHANGELOG.md, if applicable.

SDK/CLI

• Are there new checks included in this PR? Yes / No
  • If so, do we need to update permissions for the provider? Please review this carefully.

UI

• All issue/task requirements work as expected on the UI
• Screenshots/Video of the functionality flow (if applicable) - Mobile (X < 640px)
• Screenshots/Video of the functionality flow (if applicable) - Table (640px > X < 1024px)
• Screenshots/Video of the functionality flow (if applicable) - Desktop (X > 1024px)
• Ensure new entries are added to CHANGELOG.md, if applicable.

API

• All issue/task requirements work as expected on the API
• Endpoint response output (if applicable)
• EXPLAIN ANALYZE output for new/modified queries or indexes (if applicable)
• Performance test results (if applicable)
• Any other relevant evidence of the implementation (if applicable)
• Verify if API specs need to be regenerated.
• Check if version updates are required (e.g., specs, Poetry, etc.).
• Ensure new entries are added to CHANGELOG.md, if applicable.

License

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[github-actions]

✅ Conflict Markers Resolved

All conflict markers have been successfully resolved in this pull request.

[github-actions]

✅ All necessary CHANGELOG.md files have been updated.

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[github-actions]

🔒 Container Security Scan

Image: prowler:d2bce2d
Last scan: 2026-04-15 15:03:49 UTC

📊 Vulnerability Summary

Severity	Count
🔴 Critical	4
Total	4

4 package(s) affected

⚠️ Action Required

Critical severity vulnerabilities detected. These should be addressed before merging:

• Review the detailed scan results
• Update affected packages to patched versions
• Consider using a different base image if updates are unavailable

---

📋 Resources:

• Download full report (see artifacts)
• View in Security tab
• Scanned with Trivy

[codecov]

Codecov Report

❌ Patch coverage is 83.56164% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 90.42%. Comparing base (392ffd5) to head (27f3833).
⚠️ Report is 11 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #10688      +/-   ##
==========================================
- Coverage   93.61%   90.42%   -3.19%     
==========================================
  Files         227      851     +624     
  Lines       31923    24445    -7478     
==========================================
- Hits        29884    22104    -7780     
- Misses       2039     2341     +302     

Flag	Coverage Δ
api	?
prowler-py3.10-aws	90.49% <83.56%> (?)
prowler-py3.10-config	90.42% <83.56%> (?)
prowler-py3.11-aws	90.49% <83.56%> (?)
prowler-py3.11-config	90.42% <83.56%> (?)
prowler-py3.12-aws	90.49% <83.56%> (?)
prowler-py3.12-config	90.42% <83.56%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
prowler	90.42% <83.56%> (∅)
api	∅ <ø> (∅)

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