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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.64 ·

Bash Command Security Checks

Entry
JSON All of v2.1.64
EntryKind: in v2.1.64,
ChangesSection of the release
What

New security checks detect and flag potentially obfuscated bash commands that could bypass permission checks.

Details
  • Detects commands containing quoted newlines followed by #-prefixed lines, which can hide arguments from line-based permission scanning
  • Detects consecutive quote characters at word start (potential obfuscation)
  • Detects empty quote pairs adjacent to quoted dashes (flag obfuscation)
  • Sanitizes redirects to Windows NUL device by replacing with /dev/null
  • Flagged commands trigger an "ask" behavior requiring explicit user approval
Evidence

Security checks (search for "potential obfuscation", "quoted newline", "$1/dev/null")

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

See this entry in the whole of v2.1.64 →

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