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Sweep 08 Oct 2026 · 18:53Z Build v2.1.295 516 read Stable v2.1.286 Latest v2.1.295 Next v2.1.295 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.290 ·

Cloud session file staging refuses backslashes and paths that leave its folder

When placing a file for a cloud session, Claude Code now rejects folder names with backslashes and destinations outside the staging folder

You'll notice Improvements
JSON All of v2.1.290
You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
Cloud SessionsArea: what it touches
ImprovementsKind: in v2.1.290,
ImprovementsSection of the release

Unclear It is not clear when these checks run or what the settings helper is used for.

What

When Claude Code stages a file, meaning it places the file into a holding folder before use, it now checks the destination more strictly:

  • A folder on the way to the destination whose name contains a backslash is rejected.
  • A destination whose parent folder sits outside the staging folder is rejected.

Separately, a helper that prepares a settings document for the home folder now merges the deny and ask permission rules into it. Deny rules block an action, and ask rules make Claude Code ask you first.

Why

These checks apply to cloud sessions only, and they stop a staged file from landing somewhere other than the folder it was meant for.

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtIt is not clear when these checks run or what the settings helper is used for.

See this entry in the whole of v2.1.290 →

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