CVE-2026-18657: Amazon Kiro CLI

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Amazon Kiro CLI: before 2.10.0 (fixed in 2.10.0)

Published 2026-08-04. Last modified 2026-08-18.