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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.251 ·

Wider pattern for spotting sensitive HTTP headers

More HTTP headers are recognised as sensitive, including cloud provider auth headers.

You'll notice Internal Changes
JSON All of v2.1.251
You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
PrivacyArea: what it touches
Internal ChangesKind: in v2.1.251,
Internal ChangesSection of the release
What

A pattern was added that recognises headers containing auth, key, token, cookie, secret or credential, plus cloud provider prefixes including Google, AWS, Azure and Cloudflare Access ones, for treating those headers as sensitive.

Details
  • Where it is applied is not visible from the pattern itself.
Evidence

x-goog-|l5d-|bypass|guardrail|amz|x-ms-|azureml

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.251 →

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