What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-04 · updated 2026-10-24
• Weakness: CWE-427

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

• Amazon Kiro CLI: before 2.10.0 — fixed in 2.10.0

How to fix

Upgrade to a fixed version: Amazon Kiro CLI 2.10.0. Check the vendor advisory for mitigations.

References

• https://aws.amazon.com/security/security-bulletins/2026-074-aws/
• https://kiro.dev/changelog/cli/2-10/

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