What is CVE-2026-18656?

CVE-2026-18656 is a high-severity vulnerability in Amazon Kiro Ide, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2026-08-04.

How severe is CVE-2026-18656?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Amazon Kiro Ide

CVE-2026-18656

An uncontrolled search path element in Kiro IDE before version 1.0.228 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 opens the directory. To remediate this issue, users should upgrade to version 1.0.228 or higher.

EPSS: 0.002 (5.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Amazon Kiro Ide — versions 1.0.0
Amazon Kiro_ide

Weakness classification (CWE)

CWE-427 — Uncontrolled Search Path Element

References

ff89ba41-3aa1-4d27-914a-91399e9639e5 (vendor-advisory, Vendor Advisory)
ff89ba41-3aa1-4d27-914a-91399e9639e5 (release-notes, Release Notes, patch)

Frequently asked questions

What is CVE-2026-18656?: CVE-2026-18656 is a high-severity vulnerability in Amazon Kiro Ide, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2026-08-04.
How severe is CVE-2026-18656?: High severity. CVSS v3 base score is 7.8 out of 10.