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Sweep 25 Sep 2026 · 19:33Z Build v2.1.283 504 read Stable v2.1.274 Latest v2.1.283 Next v2.1.283 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.280 ·

Daemon startup now validates and drops malformed environment variables

Claude Code now validates environment variables before handing them to a spawned daemon process

Under the hood Bug Fixes
JSON All of v2.1.280
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
DaemonArea: what it touches
Bug FixesKind: in v2.1.280,
Bug FixesSection of the release
What

When Claude Code starts a background daemon process, it now checks each environment variable it is about to pass in. Entries with invalid names, values that aren't strings, or values containing NUL characters are rejected and dropped, and the dropped entries are logged. Previously the whole environment object was assigned to the daemon without this check.

Why

This prevents malformed environment data from being silently passed into a spawned process, which could otherwise cause the daemon to fail to start or behave unpredictably.

See this entry in the whole of v2.1.280 →

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