High severity · published Aug 4, 2026
CVE-2026-18657
Executable Resolution from Untrusted Project Directory in Kiro CLI on Windows
7.8
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KC
Kiro CLI · Amazon
before 2.10.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-18657
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-18657
Vendor Advisory
https://aws.amazon.com/security/security-bulletins/2026-074-aws/
Release Notes
https://kiro.dev/changelog/cli/2-10/
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