Evidence record / codex
A dated record of one change, kept so the writing that cites it can be checked. Compiled from the sources listed below by the research run, not written for reading. The judgment lives in the issues that cite it, below.
2026-10-13-codex-unix-mcp-children-lose-unrelated-descriptors-and-oauth-endpoints-require-http
Unix MCP children lose unrelated descriptors and OAuth endpoints require HTTP(S). Unix local stdio MCP servers and descendants now launch with StdioOnly descriptor policy; Windows is not covered. MCP OAuth also rejects authorization endpoint schemes other than http or https before client registration or authorization URL return.
Channel: tagged-release. Half: both. Date: 2026-09-25 (0.157.0).
Operator consequence: Run 0.157.0 or later and check integrations relying on unrelated inherited descriptors or custom authorization URI schemes. Explicit transport stdio remains; do not infer this descriptor isolation on Windows.
Receipt
Finding metadata
Run: 2026-10-13-profile-refresh-2026-09-21_2026-10-13-frontier-v0
Finding ID: 2026-10-13-codex-unix-mcp-children-lose-unrelated-descriptors-and-oauth-endpoints-require-http
Source links
Primary links, including exact changelog lines when available.
- commit2026-10-13-codex-unix-mcp-children-lose-unrelated-descriptors-and-oauth-endpoints-require-httpgithub.com/openai/codex/commit/afe4249cfe6bdf218ce8807a670fad122d2b60edcommit2026-10-13-codex-unix-mcp-children-lose-unrelated-descriptors-and-oauth-endpoints-require-httpgithub.com/openai/codex/commit/2c2a42e65de077c5518ea5b4c3999633ef6a12fc
Versioned source: run artifact