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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.234 ·

Filenames and MCP content types are escaped in the transcript

Filenames and MCP content types are escaped in the transcript, closing a text-injection route.

You'll notice Improvements
JSON All of v2.1.234
You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
TranscriptArea: what it touches
ImprovementsKind: in v2.1.234,
ImprovementsSection of the release
What

The message recorded when you open a file in the IDE now escapes the filename, and the content type reported by an MCP server for binary results is escaped before being shown as [Binary content: …]. This narrows a path by which a crafted filename or server-supplied metadata could inject text into the conversation.

Evidence

The user opened the file

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

See this entry in the whole of v2.1.234 →

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