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Codex Release Digest

type: summaryconfidence: highupdated: 2026-06-10sources: 15

Key Points

Current latest stable release: 0.139.0 (tag rust-v0.139.0, published 2026-06-09). Latest pre-release: 0.140.0-alpha.4 (tag rust-v0.140.0-alpha.4, published 2026-06-10).
The repo CHANGELOG.md is a stub: "The changelog can be found on the releases page." Release notes are the only changelog.
Alpha releases carry no release notes (body is just "Release X.Y.Z-alpha.N"); curated notes land only on the stable tag. Don't expect alpha notes to explain behavior changes.

Cadence is very fast: 0.138.0 shipped 2026-06-08, 0.139.0 shipped 2026-06-09, and 0.140.0 alphas began the same day 0.139.0 went stable. Multiple alphas can ship per day (e.g. eight 0.138.0 alphas between 2026-06-04 and 2026-06-08).
Practical implication: when triaging a bug, always record the exact codex --version, and check whether the issue reproduces on the latest stable before filing — regressions are often fixed within a day or two. Downgrading one minor version is a common, sanctioned mitigation (see casebook runtime).

Code mode can call standalone web search directly, including from nested JavaScript tool calls (#26719).
Tool/connector input schemas now preserve oneOf and allOf; large schemas keep more shallow structure when compacted — better MCP compatibility (#24118, #27084). See mcp integration.
codex doctor now reports editor and pager environment details (#27081).
codex plugin marketplace list --json includes each marketplace source; plugin lists can serve from cached remote catalog (#27009, #26932).
Fix: codex resume --last "..." and codex fork --last "..." treat the trailing argument as the initial prompt, not a session ID (#26818).
Fix: sandbox execution preserves approved escalation decisions and enforces configured proxy-only networking more consistently (#24981, #27035). Relevant to sandbox approval guide.
New CLI alias: -P for sandbox permissions profile (#27054).
Fix: /new, /clear, /fork no longer drop cloud-managed requirements or feature flags during TUI config reloads (#25177).

/app command hands off the current CLI thread into Codex Desktop on macOS and native Windows (#25638, #26500). See codex app and codex cli.
Local image attachments and standalone image generations expose saved file paths to the model, making follow-up edits reliable (#25944, #25947).
Codex auth supports v2 personal access tokens in CLI and app-server flows; app-server integrations can read account token usage (#25731, #25344). See authentication.
Plugin subcommands gained --json output (#26631, #26417).
Goal-mode fixes: multiline paste in /goal edit no longer submits early; goals stop auto-continuing after terminal turn failures (#26047, #26690).
Startup resilience: /usr/bin/bash shell fallback, shorter Linux proxy socket paths, pre-refresh of expired OAuth-backed MCP credentials (#26538, #26553, #26482).
AGENTS.md loading fixed for remote and symlinked workspaces (#26205, #26465). See agents md.
Managed permission profile allowlists are enforced (#24852) — the permissions docs treat 0.138.0 as the minimum version for managed permission-profile rollouts.
Perf: resume --last uses the state DB first; faster TUI startup via reused plugin discovery (#26462, #26469).

Type: GitHub release notes from openai/codex (tags rust-v0.138.0-alpha.2 through rust-v0.140.0-alpha.4) plus the repo CHANGELOG.md stub.
Author: OpenAI Codex maintainers.
Fetched: 2026-06-10. Latest stable at fetch time: 0.139.0; latest pre-release: 0.140.0-alpha.4.
URLs: https://github.com/openai/codex/releases