Grav ihas Broken Access Control which allows an Editor to modify the page’s YAML Frontmatter to alter form processing actions_CVE-2025-66301

{
    "lastseen": "",
    "description": "Grav is a file-based Web platform. Prior to 1.8.0-beta.27, due to improper authorization checks when modifying critical fields on a POST request to /admin/pages/{page_name}, an editor with only permissions to change basic content on the form is now able to change the functioning of the form through modifying the content of the data[_json][header][form] which is the YAML frontmatter which includes the process section which dictates what happens after a user submits the form which include some important actions that could lead to further vulnerabilities. This vulnerability is fixed in 1.8.0-beta.27.",
    "published": "2025-12-01T21:30:43.359Z",
    "modified": "2025-12-01T21:30:43.359Z",
    "type": "cve",
    "title": "Grav ihas Broken Access Control which allows an Editor to modify the page's YAML Frontmatter to alter form processing actions",
    "source": "GitHub_M",
    "references": "https://github.com/getgrav/grav/security/advisories/GHSA-v8x2-fjv7-8hjh",
    "id": "CVE-2025-66301",
    "bulletinFamily": "",
    "cwe": [
        "CWE-285"
    ],
    "cvelist": null,
    "sourceData": "getgrav grav < 1.8.0-beta.27",
    "sourceHref": "",
    "cvss": {
        "score": 8.6,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/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": "grav",
    "version": "< 1.8.0-beta.27",
    "vendor": "getgrav",
    "ai_description": "Broken Access Control vulnerability allowing editors to modify form processing actions",
    "ai_severity": "High",
    "ai_vendor": "getgrav",
    "ai_product": "Grav",
    "ai_version": "< 1.8.0-beta.27",
    "ai_score": 8.6
}