CVE-2026-5429

HIGH EPSS 5.4%

Published Apr 2, 20262mo ago · Modified Jun 17, 20261w ago

7.1 CVSS 4.0

High

Published Apr 2, 2026 2mo ago

Last Modified Jun 17, 2026 1w ago

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 Details

Base Score

7.1

Exploitability

—

Impact

—

Vector string

CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector Local

Attack Complexity Low

Privileges Required None

User Interaction A

Scope X

Threat Intelligence

EPSS Exploit Probability

5.4% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

References 2

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.