Codex CLI keeps reconnecting on shared HPC login nodes (Cloudflare cf-mitigated: challenge / HTTP 403 on chatgpt.com)

What version of Codex CLI is running?

codex-cli 0.139.0

What subscription do you have?

ChatGPT Plus

Which model were you using?

Linux 5.14.0-687.10.1.el9_8.x86_64 x86_64 x86_64

What platform is your computer?

_No response_

What terminal emulator and version are you using (if applicable)?

SSH to shared HPC login node (login9/login11), terminal: (e.g. VS Code terminal / iTerm2 / Windows Terminal), no tmux/screen

Codex doctor report

What issue are you seeing?

stream disconnected before completion: An error occurred while processing your request. You can retry your request, or contact us through our help center at help.openai.com if the error persists. Please include the request ID dfeeed29-1fee-4158-9871-2270e1b4594d in your message.

What steps can reproduce the bug?

1. SSH into shared login node (e.g., login9).
2. Run codex and submit any prompt (or run via VS Code Codex extension on the same node).
3. Observe streaming starts then disconnects and reconnects repeatedly.
4. Confirm curl -I https://chatgpt.com shows 403 cf-mitigated: challenge.

What is the expected behavior?

_No response_

Additional information

_No response_