Claude Code Vulnerable to Command Injection via Piped sed Command Bypasses File Write Restrictions

Claude Code failed to properly validate commands using piped sed operations with the echo command, allowing attackers to bypass file write restrictions. This vulnerability enabled writing to sensitive directories like the .claude folder and paths outside the project scope. Exploiting this require...

PT-2026-6764

Name of the Vulnerable Software and Affected Versions Claude Code versions prior to 2.0.55 Description Claude Code, an agentic coding tool, exhibited a flaw in command validation. Specifically, the software did not adequately validate commands utilizing piped sed operations with the echo command...