CVE-2026-9255

EUVD-2026-31471
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.8 HIGH
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 2%
Affected Products (NVD)
VendorProductVersion
amazonkiro_cli
𝑥
< 1.28.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://aws.amazon.com/security/security-bulletins/2026-035-aws/
https://kiro.dev/changelog/cli/1-28/