Kiro CLI up to 2.9.x Workspace Trust untrusted search path

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k2.48+

Summaryinfo

A vulnerability has been found in Kiro CLI up to 2.9.x and classified as critical. This impacts an unknown function of the component Workspace Trust. The manipulation leads to untrusted search path. This vulnerability is referenced as CVE-2026-18657. The attack can only be performed from a local environment. No exploit is available.

Detailsinfo

A vulnerability was found in Kiro CLI up to 2.9.x. It has been rated as critical. This issue affects an unknown part of the component Workspace Trust. The manipulation with an unknown input leads to a untrusted search path vulnerability. Using CWE to declare the problem leads to CWE-426. The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at kiro.dev. The identification of this vulnerability is CVE-2026-18657 since 08/03/2026. The exploitation is known to be difficult. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1574 according to MITRE ATT&CK.

Upgrading to version 2.10.0 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.0
VulDB Temp Score: 6.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Untrusted search path
CWE: CWE-426
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: CLI 2.10.0

Timelineinfo

08/03/2026 CVE reserved
08/04/2026 +1 days Advisory disclosed
08/04/2026 +0 days VulDB entry created
08/04/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: kiro.dev
Status: Confirmed

CVE: CVE-2026-18657 (🔒)
GCVE (CVE): GCVE-0-2026-18657
GCVE (VulDB): GCVE-100-385955

Entryinfo

Created: 08/04/2026 22:24
Changes: 08/04/2026 22:24 (54)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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