August 15, 2026 / Daily Edition / 2 stories in this issue
Lead Story Sources +3

Codex Stops a Thread’s Permission From Leaking Into a Read-Only Environment

A new Codex regression test makes the sharpest promise in its permissions work: a selected environment configured read-only must stay read-only even when the surrounding thread can write.

A torn-paper marker diagram shows a write-enabled thread feeding a selected read-only environment; a write arrow is stopped by a red denial stamp beside source cards for Codex change 38673 and its remote-environment test.
Diagram Punka selected read-only environment keeps the sharper boundary.
repo openai/codex evidence
3 source signals 1 repo 2 linked commits
Evidence: 2 linked commits / August 15, 2026 / Daily Edition
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