Plainpad: Privilege Escalation via Writable Admin Field in Profile Update (Access Control)_CVE-2026-42562

{
    "lastseen": "",
    "description": "Plainpad is a self hosted note taking app. Prior to version 1.1.1, Plainpad allows a low-privilege authenticated user to self-escalate to administrator by submitting admin=true in PUT /api.php/v1/users/{id}. The endpoint directly persists the admin attribute from user input, and the escalated account can immediately access admin-only routes. This issue has been patched in version 1.1.1.",
    "published": "2026-05-09T19:09:48.862Z",
    "modified": "2026-05-09T19:09:48.862Z",
    "type": "cve",
    "title": "Plainpad: Privilege Escalation via Writable Admin Field in Profile Update (Access Control)",
    "source": "GitHub_M",
    "references": "https://github.com/alextselegidis/plainpad/security/advisories/GHSA-pvfv-wvpm-q6f6\nhttps://github.com/alextselegidis/plainpad/issues/138\nhttps://github.com/alextselegidis/plainpad/commit/9216a876d27b22c3d9259551636d803f7cb075fc\nhttps://github.com/alextselegidis/plainpad/releases/tag/1.1.1",
    "id": "CVE-2026-42562",
    "bulletinFamily": "",
    "cwe": [
        "CWE-269"
    ],
    "cvelist": null,
    "sourceData": "alextselegidis plainpad < 1.1.1",
    "sourceHref": "",
    "cvss": {
        "score": 8.3,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/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": "plainpad",
    "version": "< 1.1.1",
    "vendor": "alextselegidis",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}