Craft CMS: Potential authenticated Remote Code Execution via malicious attached Behavior_CVE-2026-44011

{
    "lastseen": "",
    "description": "Craft CMS is a content management system (CMS). From 4.0.0 to before 4.17.12 and 5.9.18, Craft CMS which contains an input-handling flaw in a Yii object creation path that let any authenticated user inject malicious configuration and execute arbitrary commands on the server. The request-controlled condition field layouts data is converted into a live FieldLayout object without a Component::cleanseConfig() boundary. Because Craft configures models before parent::__construct(), attacker-controlled special config keys can take effect during object creation, and FieldLayout initialization then triggers a same-request event. This vulnerability is fixed in 4.17.12 and 5.9.18.",
    "published": "2026-05-12T20:25:08.183Z",
    "modified": "2026-05-12T20:25:08.183Z",
    "type": "cve",
    "title": "Craft CMS: Potential authenticated Remote Code Execution via malicious attached Behavior",
    "source": "GitHub_M",
    "references": "https://github.com/craftcms/cms/security/advisories/GHSA-qrgm-p9w5-rrfw\nhttps://github.com/craftcms/cms/commit/ab85ca7f5f926994f723f60584054a1f4c4c5de3",
    "id": "CVE-2026-44011",
    "bulletinFamily": "",
    "cwe": [
        "CWE-479"
    ],
    "cvelist": null,
    "sourceData": "craftcms cms >= 4.0.0, < 4.17.12\ncraftcms cms >= 5.0.0, < 5.9.18",
    "sourceHref": "",
    "cvss": {
        "score": 8.6,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
    "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": "cms",
    "version": ">= 4.0.0, < 4.17.12",
    "vendor": "craftcms",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}