HIGHCVE-2026-9255Published Modified CNA AMZN
CVE-2026-9255: Tool Execution Without Authorization via Piped Stdin in Kiro CLI
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.
Metrics
- CVSS v4.0
- 8.4
- Severity
- HIGH
- Fixed in
- 1.28.0
- Affected Products
- 1
Fix available
1.28.0
Affected packages
- AWS / Kiro CLI< 1.28.0 (from 0)
CVSS Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NReferences