CVE-2026-18656 & CVE-2026-18657 - Issue with Kiro IDE and CLI - Executable Resolution from Untrusted Project Directory on Windows

Summary

CVE-2026-18656 and CVE-2026-18657 affect Kiro IDE for Windows versions 1.0.0 through 1.0.212 and Kiro CLI for Windows prior to v2.10.0. An uncontrolled search path element lets an actor execute arbitrary code through a maliciously crafted project directory that contains a planted executable, which is resolved before the system PATH when a local user opens the directory.

Mitigation

The source does not state a fix yet. Check the original advisory for updates.

Related items

• HighCVE-2026-115413 - AWS API MCP Server OAuth token audience validation bypassSame vendor · AWS Security Bulletins
• MediumCVE-2026-116635 - Improper limitation of a pathname to a restricted directory in the deployment status component of the AWS Serverless MCP ServerSame vendor · AWS Security Bulletins
• MediumCVE-2026-120497 - Stored cross-site scripting in the HTML report generator of aidlc-traceability in AWS AI-DLC WorkflowsSame vendor · AWS Security Bulletins
• HighCVE-2026-115415 - Secret masking bypass in the environment tool in Strands Agents ToolsSame vendor · AWS Security Bulletins
• HighGHSA-4v6f-7vjh-6x4m: Strands Agents SDK: Exposure of data element to wrong session in the A2A ServerSame vendor · GitHub Advisory Database