CVE-2026-9255

Published: May 22, 2026

Modified: May 23, 2026

PUBLISHED

CVSS v3.1

7.8

HIGH

Description

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.

Vendor	Product	Versions
AWS	Kiro CLI	affected `0 - < 1.28.0`

Weaknesses (CWE)

CWE-862

CVSS v3.1 Details

CVSS v3.1 Vector

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

References

https://kiro.dev/changelog/cli/1-28/

release-notes

https://aws.amazon.com/security/security-bulletins/2026-035-aws/

vendor-advisory

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CVE-2026-9255

Description

Affected Products

Weaknesses (CWE)

CVSS v3.1 Details

References