CVE-2026-9255
Missing input source validation in the tool authorization prompt in Kiro CLI before 1.28.0 allows a local attacker to execute arbitrary tools, including shell commands, without user approval by crafting content that is piped to kiro-cli via stdin. We recommend you to upgrade to kiro-cli version 1.28.0 or later.
- Published May 22, 2026
- CVSS 8.4 high
- 0.2% chance of exploitation in the next 30 days (EPSS)
- A fix is available
Affected software
In the news
- CVE-2026-9255 - Tool Execution Without Authorization via Piped Stdin in Kiro CLI AWS Security Bulletins ·