CVE-2026-48611_CVE-2026-48611

{
    "lastseen": "",
    "description": "Improper authentication checks in the OAuth implementation allow account hijacking even when OAuth is not configured or enabled leading to unauthorized access in default installations.",
    "published": "2026-06-12T02:27:43.351Z",
    "modified": "2026-12T02:27:43.351Z",
    "type": "cve",
    "title": "CVE-2026-48611",
    "source": "hackerone",
    "references": "https://www.phpbb.com/community/viewtopic.php?t=2672170",
    "id": "CVE-2026-48611",
    "bulletinFamily": "",
    "cwe": [
        "CWE-287"
    ],
    "cvelist": null,
    "sourceData": "phpBB phpBB 3.3.0",
    "sourceHref": "",
    "cvss": {
        "score": 9.8,
        "severity": "CRITICAL",
        "vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.0"
    },
    "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": "phpBB",
    "version": "3.3.0",
    "vendor": "phpBB",
    "ai_description": "OAuth authentication bypass vulnerability allowing account hijacking",
    "ai_severity": "Critical",
    "ai_vendor": "phpBB",
    "ai_product": "phpBB",
    "ai_version": "3.3.0",
    "ai_score": 9.8
}