CVE-2026-5429 in AWS Kiro IDE
Summary
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.
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Responsible
AMZN
Reservation
04/02/2026
Disclosure
04/02/2026
Status
Confirmed
Entries
VulDB provides additional information and datapoints for this CVE:
| ID | Vulnerability | CWE | Exp | Cou | CVE |
|---|---|---|---|---|---|
| 355028 | Amazon AWS Kiro IDE Kiro Agent Webview cross site scripting | 79 | Not defined | Official fix | CVE-2026-5429 |