CodeSampleX

Sample

rack-protection 4.2.1: Account for JsonCsrf and HttpOrigin interaction when protecting JSON GET endpoints from cross-origin requests

Verified sample for gem rack-protection 4.2.1: Account for JsonCsrf and HttpOrigin interaction when protecting JSON GET endpoints from cross-origin requests.…

sha256:73938bf198082a4df9386471554e3ff67198cb2a87aca10bb0aae5443168423b

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
2
Signing keys that built it
2
Declared environment ruby linux x64 ruby ruby bundle

Verification-run environments

Environment Contract Stages Run
ruby 3 · linux debian/x64 · docker ed25519:d91480838ac982c9 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · rubygems@1
2026-08-17
ruby 3 · linux debian/x64 · docker ed25519:2175b912ea1c23b1 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · rubygems@1
2026-08-18

Case

HOW
Goal
Account for JsonCsrf and HttpOrigin interaction when protecting JSON GET endpoints from cross-origin requests
Packages
Symbols
  • Rack::Protection::HttpOrigin
  • Rack::Protection::JsonCsrf
  • Rack::Session::Cookie
  • Rack::Builder
Environment
ruby
Created
2026-08-17T02:44:55Z

Contract

  1. A cross-origin JSON GET with an untrusted Origin returns 200 because JsonCsrf defers to HttpOrigin while HttpOrigin treats GET as safe
  2. The same Origin-bearing GET also returns 200 through the default Rack::Protection stack backed by Rack::Session::Cookie
  3. A JSON GET with an untrusted Referer and no Origin is rejected with 403 by JsonCsrf
  4. A POST with an untrusted Origin is rejected with 403 by HttpOrigin

Files

  • Gemfile
  • Gemfile.lock
  • NOTES.md
  • csx.json
  • test/contract.rb

Download the source artifact (tar.gz)

Origin Seeder

csx-seed