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OpenAdvisories
High · 7.8 CVE-2026-5429 EUVD-2026-18519GHSA-7v7j-vpv5-h468

Kiro IDE Webview Cross-Site Scripting via Workspace Color Theme

Published Apr 2, 2026 · Updated Apr 2, 2026 · Assigned by AMZN

Description

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.

Affected products

VendorProductAffectedFixed
AWS Kiro IDE 0.1 – < 0.8.140 0.8.140

References