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## Why The elevated Windows command runner currently trusts the first process that connects to its parent-created named pipes. Tightening the pipe ACL already narrows who can reach that boundary, but verifying the connected client PID gives the parent one more fail-closed check: it only accepts the exact runner process it just spawned. ## What changed - validate `GetNamedPipeClientProcessId` after `ConnectNamedPipe` and reject clients whose PID does not match the spawned runner - also did some code de-duplication to route the one-shot elevated capture flow in `windows-sandbox-rs/src/elevated_impl.rs` through `spawn_runner_transport()` so both elevated codepaths use the same pipe bootstrap and PID validation Using the transport unification here also reduces duplication in the elevated Windows IPC bootstrap, so future hardening to the runner handshake only needs to land in one place. ## Validation - `cargo test -p codex-windows-sandbox` - manual testing: one-shot elevated path via `target/debug/codex.exe exec` running a randomized shell command and confirming captured output - manual testing: elevated session path via `target/debug/codex.exe -c 'windows.sandbox="elevated"' sandbox windows -- python -u -c ...` with stdin/stdout round-trips (`READY`, then `GOT:...` for two input lines) --------- Co-authored-by: viyatb-oai <viyatb@openai.com>
e787358f70
·
2026-04-24 17:41:08 +00:00
5,777 Commits
npm i -g @openai/codex
or brew install --cask codex
Codex CLI is a coding agent from OpenAI that runs locally on your computer.
If you want Codex in your code editor (VS Code, Cursor, Windsurf), install in your IDE.
If you want the desktop app experience, run
codex app or visit the Codex App page.
If you are looking for the cloud-based agent from OpenAI, Codex Web, go to chatgpt.com/codex.
Quickstart
Installing and running Codex CLI
Install globally with your preferred package manager:
# Install using npm
npm install -g @openai/codex
# Install using Homebrew
brew install --cask codex
Then simply run codex to get started.
You can also go to the latest GitHub Release and download the appropriate binary for your platform.
Each GitHub Release contains many executables, but in practice, you likely want one of these:
- macOS
- Apple Silicon/arm64:
codex-aarch64-apple-darwin.tar.gz - x86_64 (older Mac hardware):
codex-x86_64-apple-darwin.tar.gz
- Apple Silicon/arm64:
- Linux
- x86_64:
codex-x86_64-unknown-linux-musl.tar.gz - arm64:
codex-aarch64-unknown-linux-musl.tar.gz
- x86_64:
Each archive contains a single entry with the platform baked into the name (e.g., codex-x86_64-unknown-linux-musl), so you likely want to rename it to codex after extracting it.
Using Codex with your ChatGPT plan
Run codex and select Sign in with ChatGPT. We recommend signing into your ChatGPT account to use Codex as part of your Plus, Pro, Business, Edu, or Enterprise plan. Learn more about what's included in your ChatGPT plan.
You can also use Codex with an API key, but this requires additional setup.
Docs
This repository is licensed under the Apache-2.0 License.