BuddyPress 14.4.0 Private Message IDOR via REST API user_id Parameter_CVE-2026-53673

{
    "lastseen": "",
    "description": "BuddyPress 14.4.0 contains an insecure direct object reference vulnerability in the messages REST API that allows authenticated attackers to access arbitrary private message threads by supplying a user_id parameter in the request. Attackers can pass another user's identifier to the get_item_permissions_check method, which validates the supplied user_id instead of the logged-in user and is reused by the update and delete handlers, to read, reply to, or delete any user's private messages.",
    "published": "2026-06-09T23:44:20.697Z",
    "modified": "2026-06-09T23:44:20.697Z",
    "type": "cve",
    "title": "BuddyPress 14.4.0 Private Message IDOR via REST API user_id Parameter",
    "source": "VulnCheck",
    "references": "https://buddypress.org/\nhttps://wordpress.org/plugins/buddypress/\nhttps://www.vulncheck.com/advisories/buddypress-private-message-idor-via-rest-api-user-id-parameter",
    "id": "CVE-2026-53673",
    "bulletinFamily": "",
    "cwe": [
        "CWE-639"
    ],
    "cvelist": null,
    "sourceData": "BuddyPress BuddyPress 0",
    "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": "BuddyPress",
    "version": "14.4.0",
    "vendor": "BuddyPress",
    "ai_description": "Insecure direct object reference vulnerability in the messages REST API",
    "ai_severity": "High",
    "ai_vendor": "Automattic",
    "ai_product": "BuddyPress",
    "ai_version": "14.4.0",
    "ai_score": 8.6
}