Grav: Privilege Escalation via Missing Server-Side Validation of groups/access_CVE-2026-42613

{
    "lastseen": "",
    "description": "Grav is a file-based Web platform. Prior to 2.0.0-beta.2, the Login::register() method in the Login plugin accepts attacker-controlled groups and access fields from the registration POST data without server-side validation. When registration is enabled and groups or access are included in the configured allowed fields list, an unauthenticated user can self-register with admin.super privileges by injecting these fields into the registration request. This vulnerability is fixed in 2.0.0-beta.2.",
    "published": "2026-05-11T15:24:19.238Z",
    "modified": "2026-05-11T15:24:19.238Z",
    "type": "cve",
    "title": "Grav: Privilege Escalation via Missing Server-Side Validation of groups/access",
    "source": "GitHub_M",
    "references": "https://github.com/getgrav/grav/security/advisories/GHSA-pxm6-mhxr-q4mj\nhttps://github.com/getgrav/grav-plugin-login/commit/3d419a0dabd70aed1fd49afcd5919004a4141da1",
    "id": "CVE-2026-42613",
    "bulletinFamily": "",
    "cwe": [
        "CWE-20",
        "CWE-862"
    ],
    "cvelist": null,
    "sourceData": "getgrav grav < 2.0.0-beta.2",
    "sourceHref": "",
    "cvss": {
        "score": 9.4,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L",
        "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": "grav",
    "version": "< 2.0.0-beta.2",
    "vendor": "getgrav",
    "ai_description": "Privilege escalation via missing server-side validation of groups/access in Grav",
    "ai_severity": "Critical",
    "ai_vendor": "GetGrav",
    "ai_product": "Grav",
    "ai_version": "< 2.0.0-beta.2",
    "ai_score": 9.4
}