CVE-2026-5429

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.

CVSS Vector

References

• https://aws.amazon.com/security/security-bulletins/2026-012-aws/
• https://kiro.dev/changelog/ide/0-8/#patch-0-8-140