Remote Code Execution Vulnerability in Kiro IDE by Kiro
CVE-2026-5429

7.1HIGH

Key Information:

Vendor

Aws

Status
Kiro Ide
Vendor
CVE Published:
2 April 2026

What is CVE-2026-5429?

An unsanitized input vulnerability in the Kiro Agent webview component of Kiro IDE allows remote unauthenticated attackers to execute arbitrary code. This security flaw arises when a user opens a workspace containing a maliciously crafted color theme name, necessitating user consent to trust the workspace. Users are advised to upgrade to Kiro IDE version 0.8.140 or later to mitigate this issue.

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Deploy the Patch

Affected Version(s)

Kiro IDE 0.1 < 0.8.140

References

https://aws.amazon.com/security/security-bulletins/2026-0...
vendor-advisory
https://kiro.dev/changelog/ide/0-8/#patch-0-8-140
release-notes

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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