HIGHCVE-2026-5429Published Modified CNA AMZN
CVE-2026-5429: Kiro IDE Webview Cross-Site Scripting via Workspace Color Theme
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.
Metrics
- CVSS v4.0
- 7.1
- Severity
- HIGH
- Fixed in
- 0.8.140
- Affected Products
- 1
Fix available
0.8.140
Affected packages
- AWS / Kiro IDE< 0.8.140 (from 0.1)
CVSS Vector
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NReferences