Kiro IDE Webview Cross-Site Scripting via Workspace Color Theme_CVE-2026-5429

{
    "lastseen": "",
    "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.\n\nTo remediate this issue, users should upgrade to version 0.8.140.",
    "published": "2026-04-02T18:37:42.972Z",
    "modified": "2026-04-02T19:22:46.775Z",
    "type": "cve",
    "title": "Kiro IDE Webview Cross-Site Scripting via Workspace Color Theme",
    "source": "AMZN",
    "references": "https://aws.amazon.com/security/security-bulletins/2026-012-aws/\nhttps://kiro.dev/changelog/ide/0-8/#patch-0-8-140",
    "id": "CVE-2026-5429",
    "bulletinFamily": "",
    "cwe": [
        "CWE-79"
    ],
    "cvelist": null,
    "sourceData": "AWS Kiro IDE 0.1",
    "sourceHref": "",
    "cvss": {
        "score": 7.8,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Kiro IDE",
    "version": "0.1",
    "vendor": "AWS",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}