CVE-2026-9255 - Tool Execution Without Authorization via Piped Stdin in Kiro CLI

Summary

CVE-2026-9255 is a missing input source validation issue in the tool authorization prompt of Kiro CLI, an AI coding assistant, affecting kiro-cli prior to 1.28.0. A local actor who crafts content piped to kiro-cli via stdin could execute arbitrary tools, including shell commands, without user approval.

Mitigation

The source does not state a fix yet. Check the original advisory for updates.

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