Vulnerability · Published Aug 4, 2026 · Assigned by AMZN

CVE-2026-18657Executable Resolution from Untrusted Project Directory in Kiro CLI on Windows

High 7.8

In plain English

A high-severity uncontrolled search path in Kiro CLI from Amazon. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).

Severity (CVSS 3.1)7.8High

Exploit odds (30 days)0.2%top 85.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Amazon	Kiro CLI	0 – before 2.10.0

Weakness: CWE-427 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

https://kiro.dev/changelog/cli/2-10/ release-notes, patch
https://aws.amazon.com/security/security-bulletins/2026-074-aws/ vendor-advisory