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fix(auth): harden X.509 workload identity integration - #3740

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codex/x509-adversarial-hardening
Aug 27, 2026
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fix(auth): harden X.509 workload identity integration#3740
jbeckwith-oai merged 15 commits into
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codex/x509-adversarial-hardening

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@jbeckwith-oai

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Summary

  • Make X.509 workload identity consistent across synchronous and asynchronous clients, supported data-residency regions, client copies, and explicit authentication configuration.
  • Preserve caller-owned HTTP clients, request hooks, custom HTTPS origins and TLS configuration, retry behavior, token refresh, and request replay compatibility.
  • Add focused synchronous, asynchronous, concurrent, legacy-HTTPX, and workload-identity regression coverage without changing the public API or custom-code budget policy.

Validation

  • Full repository tests: 9,425 passed, 32 skipped.
  • Focused X.509 and compatibility tests: 340 passed, 2 skipped.
  • Legacy HTTPX compatibility tests: 137 passed.
  • Large-payload compatibility regression passed.
  • Ruff, whole-repository pyright, and mypy across 1,576 files passed.
  • Wheel and source distributions built successfully; package metadata and Bedrock packaging validated.
  • Existing custom-code budget passed: 6,574 / 10,000.

@jbeckwith-oai
jbeckwith-oai requested a review from a team as a code owner August 27, 2026 04:36
@chatgpt-codex-connector

chatgpt-codex-connector Bot commented Aug 27, 2026

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Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review Status Commit Review trigger
📝 Code Review Completed 2026-08-27T20:24:26.139277Z 7a31bcc New commits
🔒 Security Review Completed 2026-08-27T20:25:47.507732Z 7a31bcc New commits

Security findings

Advisory findings (1)

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github-actions Bot commented Aug 27, 2026

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Castiron custom code

✅ No new custom-code files detected.

34 mixed files remain; 1 existing customization changed.

Compared 550c7c165d237a31bcca31df. Generated baselines verified.

File Result Current custom patch
src/openai/_client.py Existing customization changed +749 / −60
33 existing customizations unchanged
  • api.md
  • scripts/castiron/README.md
  • scripts/castiron/custom_code_report.py
  • scripts/castiron/test_custom_code_report.py
  • src/openai/init.py
  • src/openai/resources/audio/transcriptions.py
  • src/openai/resources/audio/translations.py
  • src/openai/resources/beta/beta.py
  • src/openai/resources/beta/responses/responses.py
  • src/openai/resources/beta/threads/runs/runs.py
  • src/openai/resources/beta/threads/threads.py
  • src/openai/resources/chat/completions/completions.py
  • src/openai/resources/embeddings.py
  • src/openai/resources/files.py
  • src/openai/resources/realtime/realtime.py
  • src/openai/resources/responses/responses.py
  • src/openai/resources/uploads/uploads.py
  • src/openai/resources/vector_stores/file_batches.py
  • src/openai/resources/vector_stores/files.py
  • src/openai/resources/videos.py
  • src/openai/resources/webhooks/init.py
  • src/openai/resources/webhooks/webhooks.py
  • src/openai/types/chat/init.py
  • src/openai/types/chat/chat_completion_message_tool_call.py
  • src/openai/types/fine_tuning/fine_tuning_job_integration.py
  • src/openai/types/responses/init.py
  • src/openai/types/responses/response.py
  • src/openai/types/responses/response_function_web_search.py
  • src/openai/types/responses/response_function_web_search_param.py
  • src/openai/types/responses/tool.py
  • src/openai/types/responses/tool_param.py
  • src/openai/types/webhooks/init.py
  • tests/api_resources/test_videos.py

A changed generated baseline means this report cannot reliably identify which handwritten lines changed.

Inspect the custom-code diff

Download the exact patch produced by this run (requires repository access):

gh run download 33112951957 --repo openai/openai-python \
  --name castiron-custom-code-33112951957-1 --dir /tmp/castiron-custom-code-33112951957-1
git apply --stat /tmp/castiron-custom-code-33112951957-1/custom-code.patch
cat /tmp/castiron-custom-code-33112951957-1/custom-code.patch

Or reproduce it from an SDK checkout containing the vendored reporter:

git fetch --no-tags origin 550c7c165d23ebf2722261af79dbe4714dbff3fc 7a31bcca31df234c90c2a51327999dfaebe95442
python3 scripts/castiron/custom_code_report.py report \
  --base 550c7c165d23ebf2722261af79dbe4714dbff3fc \
  --head 7a31bcca31df234c90c2a51327999dfaebe95442 --fetch --require-head-hash --public \
  --out /tmp/castiron-custom-code-7a31bcca31df
cat /tmp/castiron-custom-code-7a31bcca31df/custom-code.patch

This is the current full custom patch for mixed files, not an attribution of only the handwritten lines changed by this PR.

Full report and patch

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openai-sdks Bot commented Aug 27, 2026

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OkTest Summary

237/237 SDK tests passed in 11.371s for Python SDK PR #3740.

Test results — 42 files
Test Result Time
tests/chat-completions-complex-body.test.ts ✅ Passed 194ms
tests/chat-completions-create.test.ts ✅ Passed 193ms
tests/chat-completions-stream.test.ts ✅ Passed 129ms
tests/files-content-binary.test.ts ✅ Passed 187ms
tests/files-create-multipart.test.ts ✅ Passed 129ms
tests/files-list-pagination.test.ts ✅ Passed 143ms
tests/initialize-config.test.ts ✅ Passed 185ms
tests/instance-isolation.test.ts ✅ Passed 166ms
tests/models-list.test.ts ✅ Passed 129ms
tests/responses-background-lifecycle.test.ts ✅ Passed 210ms
tests/responses-body-method-errors.test.ts ✅ Passed 295ms
tests/responses-cancel-timeout.test.ts ✅ Passed 202ms
tests/responses-cancel.test.ts ✅ Passed 213ms
tests/responses-compact-retries.test.ts ✅ Passed 406ms
tests/responses-compact.test.ts ✅ Passed 381ms
tests/responses-create-advanced-stream.test.ts ✅ Passed 149ms
tests/responses-create-advanced.test.ts ✅ Passed 276ms
tests/responses-create-disconnect.test.ts ✅ Passed 1.346s
tests/responses-create-errors.test.ts ✅ Passed 185ms
tests/responses-create-malformed-api-responses.test.ts ✅ Passed 322ms
tests/responses-create-retries.test.ts ✅ Passed 282ms
tests/responses-create-stream-failures.test.ts ✅ Passed 136ms
tests/responses-create-stream-timeout.test.ts ✅ Passed 245ms
tests/responses-create-stream-wire.test.ts ✅ Passed 3.862s
tests/responses-create-stream.test.ts ✅ Passed 314ms
tests/responses-create-terminal-states.test.ts ✅ Passed 238ms
tests/responses-create-timeout.test.ts ✅ Passed 267ms
tests/responses-create.test.ts ✅ Passed 378ms
tests/responses-delete.test.ts ✅ Passed 163ms
tests/responses-input-items-errors.test.ts ✅ Passed 388ms
tests/responses-input-items-list.test.ts ✅ Passed 334ms
tests/responses-input-items-options.test.ts ✅ Passed 323ms
tests/responses-input-tokens-count-timeout.test.ts ✅ Passed 259ms
tests/responses-input-tokens-count.test.ts ✅ Passed 260ms
tests/responses-malformed-inputs.test.ts ✅ Passed 2.861s
tests/responses-not-found-errors.test.ts ✅ Passed 247ms
tests/responses-parse.test.ts ✅ Passed 515ms
tests/responses-retrieve-retries.test.ts ✅ Passed 205ms
tests/responses-retrieve.test.ts ✅ Passed 235ms
tests/responses-stored-method-errors.test.ts ✅ Passed 484ms
tests/retry-behavior.test.ts ✅ Passed 3.071s
tests/sdk-error-shape.test.ts ✅ Passed 307ms

View OkTest run #33112929912

SDK merge (86721d5abda0) · head (7a31bcca31df) · base (550c7c165d23) · OkTest (2b1bdfd25e98)

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Reviewed synchronous/asynchronous transport attestation, destination and header protection, regional routing, issuer retries, cache ownership, copy semantics, and all previously resolved findings. One substantive cross-client rejected-bearer propagation issue remains inline.

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Reviewed the current four-file diff and surrounding SDK behavior. No actionable findings on this head.

Validation was static source and regression-test review, including an independent second pass. I did not execute tests or make live API calls.

@jbeckwith-oai
jbeckwith-oai added this pull request to the merge queue Aug 27, 2026
Merged via the queue into main with commit fc3ad6c Aug 27, 2026
26 checks passed
@jbeckwith-oai
jbeckwith-oai deleted the codex/x509-adversarial-hardening branch August 27, 2026 20:41
@openai-sdks openai-sdks Bot mentioned this pull request Aug 27, 2026
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