Source Intelligence

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 v2.1.248 Home All releases olderv2.1.247 v2.1.250newer
Claude Code v2.1.248

Denylist of shell startup variables added

Under the hood
Useful2 Signal3
Sandbox

A list names shell variables that can hijack a startup, with no visible consumer.

The denylist exists; whether Bash handling filters them is not visible.

What

A standalone list of shell-sensitive environment variables now exists, covering ENV, BASH_ENV, SHELLOPTS, PS4, GLOBIGNORE, LOCPATH, IFS, TMPDIR, BASH_LOADABLES_PATH and others, the kind that can hijack a shell at startup. Whether Bash command handling filters them is not visible from the constant alone.

Evidence

BASH_LOADABLES_PATH

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 v2.1.248 →