AbuseFilter misuses ::userCanBitfield, exposing access-controlled information_CVE-2026-34086

{
    "lastseen": "",
    "description": "Vulnerability in Wikimedia Foundation AbuseFilter.\n\nThis issue affects AbuseFilter: from * before 1.43.7, 1.44.4, 1.45.2.",
    "published": "2026-05-11T14:35:15.143Z",
    "modified": "2026-05-11T14:35:15.143Z",
    "type": "cve",
    "title": "AbuseFilter misuses ::userCanBitfield, exposing access-controlled information",
    "source": "wikimedia-foundation",
    "references": "https://phabricator.wikimedia.org/T415584",
    "id": "CVE-2026-34086",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Wikimedia Foundation AbuseFilter *",
    "sourceHref": "",
    "cvss": {
        "score": 2.1,
        "severity": "LOW",
        "vector": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/S:N/AU:Y",
        "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": "AbuseFilter",
    "version": "*",
    "vendor": "Wikimedia Foundation",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}