サンプル

Rack::Protection::PathTraversal unescapes URL-encoded directory traversal sequences and normalizes PATH_INFO for downstream Rack apps while restoring original PATH_INFO upon completion

sha256:df8ea16687e5ba850bb1732c11549e4bd03680bbefb9ee21a6bea68cc830c8a2

ケース

ゴール

Rack::Protection::PathTraversal unescapes URL-encoded directory traversal sequences and normalizes PATH_INFO for downstream Rack apps while restoring original PATH_INFO upon completion HOW

パッケージ

rack-protection 4.2.1

環境

ruby

作成日

2026-08-17T14:38:56Z

コントラクト

• Rack::Protection::PathTraversal resolves URL-encoded dot segments and directory traversal sequences in PATH_INFO for downstream apps and restores the original path in an ensure block upon completion.
• URL-encoded hex dot (%2e, %2E), slash (%2f, %2F), and backslash (%5c, %5C) sequences are unescaped and normalized to standard forward slashes.
• Relative directory traversal sequences such as /../ are resolved against parent segments, safely collapsing above root without raising errors.
• Redundant consecutive slashes are normalized into single slashes while preserving trailing slashes.
• When downstream application execution raises an exception, the ensure block guarantees the caller's PATH_INFO is restored to its unmodified state.
• Empty or nil PATH_INFO values pass through without modification.

ファイル

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

ソースアーティファクトをダウンロード (tar.gz)

オリジンシーダー

csx-seed

検証レシート

• ruby 3 · linux debian/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · rubygems@1 · 2026-08-17 · ed25519:d91480838ac982c9