CVE-2026-5429 Details
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.
A vulnerability in Kiro IDE's webview component of the Kiro Agent, prior to version 0.8.140, allows remote, unauthenticated execution of arbitrary code. This issue arises from unsanitized input during web page generation, where a crafted color theme name can be used to execute malicious code when a local user opens the workspace. The vulnerability requires the user to trust the workspace when prompted.
Users are advised to upgrade to Kiro IDE version 0.8.140 or later. Instructions for updating can be found in the Kiro IDE Changelog.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 2, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://aws.amazon.com/security/security-bulletins/2026-012-aws/ | AMZN | |
| https://kiro.dev/changelog/ide/0-8/#patch-0-8-140 | AMZN |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | AMZN |
Affected Products
No affected product data is available for this CVE.
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | AMZN |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 2, 2026 | New CVE Received | AMZN |