Sample
rack-protection 4.0.0: Detect silent middleware header name casing changes in rack-protection 4.x compared with 3.x.
Verified sample for gem rack-protection 4.0.0: Detect silent middleware header name casing changes in rack-protection 4.x compared with 3.x. The contract ran…
sha256:54af8c0cb5ec887a12fc56af91226ed4576b60f9249d8282e6065d700f8465eb
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
- 1
Declared environment
ruby linux x64 ruby ruby bundler
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| ruby 3 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · rubygems@1 |
2026-08-16 |
| ruby 3 · linux debian/x64 · docker ed25519:2175b912ea1c23b1 | SKIPPED | compile:SKIPPED · contract:SKIPPED · load:SKIPPED · resolve:FAIL CONTAINER_RUN · rubygems@1 |
2026-08-18 |
Case
HOW- Goal
- Detect silent middleware header name casing changes in rack-protection 4.x compared with 3.x.
- Packages
- Symbols
-
- Rack::Protection::XSSHeader
- Environment
- ruby
- Created
- 2026-08-16T16:39:07Z
Contract
- `Rack::Protection::XSSHeader` with `nosniff: true` must emit `x-xss-protection` and `x-content-type-options` keys, not separate mixed-case variants.
- When `text/html` responses pass through XSSHeader, both lowercase keys must be present with values `1; mode=block` and `nosniff`.
Files
- Gemfile
- NOTES.md
- csx.json
- test/contract.rb