CVE-2026-9255
Tool Execution Without Authorization via Piped Stdin in Kiro CLI
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-862 |
| Vendor | aws |
| Product | kiro cli |
| Published | May 22, 2026 |
| Last Updated | May 23, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
AWS / Kiro CLI
0 < 1.28.0