You'll noticeTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
PermissionsArea: what it touches
Bug FixesKind: in v2.1.281,
Bug FixesSection of the release
What
A permission rule pattern that contains a NUL byte now never matches. Permission rules decide what Claude Code may do without asking you. A NUL byte is an invisible zero character. The part that matches * wildcards in these rules uses NUL characters internally.
Why
A pattern with a NUL in it can no longer mix with those internal markers and match something it should not.
