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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

← All of v2.1.251 Home All releases ←olderv2.1.250
Claude Code v2.1.251

Plugin eval sandbox cleanup verifies each directory as it walks

Under the hood
Useful1 Signal3
Plugin Eval

Eval sandbox cleanup verifies each directory as it walks so a swapped symlink can't redirect it.

What

Cleaning up a plugin eval sandbox now walks the directory tree recursively, confirming each step is still the same file it expected before changing its permissions to owner-only, so a symlink swapped in mid-cleanup cannot redirect it.

Details
  • the recursive unlock runs on Linux and WSL, or when the directory is explicitly marked as owned by the harness; it is skipped on Windows
  • the eval temp area gets its own tmp subdirectory created owner-only
Evidence

await hu(e, 448)

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

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.251 →