Vulnerability in Amazon Kiro Cli
CVE-2026-18657
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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (14.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 14.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Amazon Kiro Cli — versions 0
- Amazon Kiro Cli
Weakness classification (CWE)
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-2026-18657?
- CVE-2026-18657 is a high-severity vulnerability in Amazon Kiro Cli, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2026-08-04.
- How severe is CVE-2026-18657?
- High severity. CVSS v3 base score is 7.8 out of 10.