Unsanitized input during web page generation in the Kiro Agent webview in Kiro IDE before version 0.8.140 allows a remote unauthenticated threat actor to execute arbitrary code via a potentially damaging crafted color theme name when a local user opens the workspace. This issue requires the user to trust the workspace when prompted.
To remediate this issue, users should upgrade to version 0.8.140.
"}],"value":"Unsanitized input during web page generation in the Kiro Agent webview in Kiro IDE before version 0.8.140 allows a remote unauthenticated threat actor to execute arbitrary code via a potentially damaging crafted color theme name when a local user opens the workspace. This issue requires the user to trust the workspace when prompted.\n\nTo remediate this issue, users should upgrade to version 0.8.140."}],"impacts":[{"capecId":"CAPEC-63","descriptions":[{"lang":"en","value":"CAPEC-63 Cross-Site Scripting 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IDE Webview Cross-Site Scripting via Workspace Color Theme","CVE":"CVE-2026-5429","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"5429","Ordinal":"1","NoteData":"Unsanitized input during web page generation in the Kiro Agent webview in Kiro IDE before version 0.8.140 allows a remote unauthenticated threat actor to execute arbitrary code via a potentially damaging crafted color theme name when a local user opens the workspace. This issue requires the user to trust the workspace when prompted.\n\nTo remediate this issue, users should upgrade to version 0.8.140.","Type":"Description","Title":"Kiro IDE Webview Cross-Site Scripting via Workspace Color Theme"}]}}}