@anthropic-ai/claude-code has Sed Command Validation Bypass that Allows Arbitrary File Writes

Due to an error in sed command parsing, it was possible to bypass the Claude Code read-only validation and write to arbitrary files on the host system.

Users on standard Claude Code auto-update will have received this fix automatically. Users performing manual updates are advised to update to the latest version.

Thank you to Adam Chester - SpecterOps for reporting this issue!