CVE-2026-18657

High

Description

An uncontrolled search path element in Kiro CLI before version 2.10.0 on Windows might allow a remote unauthenticated actor to execute arbitrary code via a maliciously crafted project directory containing an executable that bypasses workspace trust protections when a local user starts Kiro CLI in the directory. To remediate this issue, users should upgrade to version 2.10.0 or higher.

SeverityHigh

CVSS7.8

Exploit probability—

ProductAmazon Kiro Cli

PublishedAug 4, 2026

First seenAug 4, 2026

Weakness typeCWE-427CWE-427

How to fix

Update

amazon kiro_cli2.10.0 or later

Patches

kiro.dev/changelog/cli/2-10/

Vendor advisories

aws.amazon.com/security/security-bulletins/2026-074-aws/

Affected products

Product	Affected versions	Fixed in
amazon kiro_cli	v < 2.10.0	2.10.0

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