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Jul 16, 2026

Beware: Claude Code's Approval Previews Could Be Spoofed With Invisible Unicode

Claude Code 2.1.211 (July 15) quietly patched a flaw where permission-approval previews sent to chat channels didn't strip bidirectional-override, zero-width, and look-alike quote characters. A tool input could render as one command in the approval card and execute as another. Here's how the spoof works and how to approve safely.

Jul 16, 20265 min read0 reactions0 comments