Tool Execution Without Authorization via Piped Stdin in Kiro CLI_CVE-2026-9255

{
    "lastseen": "",
    "description": "Missing input source validation in the tool authorization prompt in Kiro CLI before 1.28.0 allows a local attacker to execute arbitrary tools, including shell commands, without user approval by crafting content that is piped to kiro-cli via stdin.\n\n\n\nWe recommend you to upgrade to kiro-cli version 1.28.0 or later.",
    "published": "2026-05-22T16:38:10.522Z",
    "modified": "2026-05-22T17:22:40.826Z",
    "type": "cve",
    "title": "Tool Execution Without Authorization via Piped Stdin in Kiro CLI",
    "source": "AMZN",
    "references": "https://kiro.dev/changelog/cli/1-28/\nhttps://aws.amazon.com/security/security-bulletins/2026-035-aws/",
    "id": "CVE-2026-9255",
    "bulletinFamily": "",
    "cwe": [
        "CWE-862"
    ],
    "cvelist": null,
    "sourceData": "AWS Kiro CLI 0",
    "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 CLI",
    "version": "0",
    "vendor": "AWS",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}