wpForo Forum <= 3.0.2 - Authenticated (Subscriber+) Arbitrary File Deletion via 'data[body][fileurl]' Parameter_CVE-2026-5809

{
    "lastseen": "",
    "description": "The wpForo Forum plugin for WordPress is vulnerable to Arbitrary File Deletion in versions up to and including 3.0.2. This is due to a two-step logic flaw: the topic_add() and topic_edit() action handlers accept arbitrary user-supplied data[*] arrays from $_REQUEST and store them as postmeta without restricting which fields may contain array values. Because 'body' is included in the allowed topic fields list, an attacker can supply data[body][fileurl] with an arbitrary file path (e.g., wp-config.php or an absolute server path). This poisoned fileurl is persisted to the plugin's custom postmeta database table. Subsequently, when the attacker submits wpftcf_delete[]=body on a topic_edit request, the add_file() method retrieves the stored postmeta record, extracts the attacker-controlled fileurl, passes it through wpforo_fix_upload_dir() which only rewrites legitimate wpforo upload paths and returns all other paths unchanged, and then calls wp_delete_file() on the unvalidated path. This makes it possible for authenticated attackers, with subscriber-level access and above, to delete arbitrary files writable by the PHP process on the server, including critical files such as wp-config.",
    "published": "2026-04-11T07:40:15.574Z",
    "modified": "2026-04-11T07:40:15.574Z",
    "type": "cve",
    "title": "wpForo Forum <= 3.0.2 - Authenticated (Subscriber+) Arbitrary File Deletion via 'data[body][fileurl]' Parameter",
    "source": "Wordfence",
    "references": "https://www.wordfence.com/threat-intel/vulnerabilities/id/0e46ac8d-89ee-4480-bb96-83f2044a4323?source=cve\nhttps://plugins.trac.wordpress.org/changeset/3503313/wpforo\nhttps://plugins.trac.wordpress.org/browser/wpforo/tags/3.0.2/classes/Actions.php#L746\nhttps://plugins.trac.wordpress.org/browser/wpforo/tags/3.0.2/classes/Actions.php#L761\nhttps://plugins.trac.wordpress.org/browser/wpforo/tags/3.0.2/classes/Posts.php#L1961\nhttps://plugins.trac.wordpress.org/browser/wpforo/tags/3.0.2/classes/PostMeta.php#L523\nhttps://plugins.trac.wordpress.org/browser/wpforo/tags/3.0.2/classes/PostMeta.php#L421\nhttps://plugins.trac.wordpress.org/browser/wpforo/tags/3.0.2/classes/PostMeta.php#L402\nhttps://plugins.trac.wordpress.org/browser/wpforo/tags/3.0.2/includes/functions.php#L2641",
    "id": "CVE-2026-5809",
    "bulletinFamily": "",
    "cwe": [
        "CWE-73"
    ],
    "cvelist": null,
    "sourceData": "tomdever wpForo Forum 0",
    "sourceHref": "",
    "cvss": {
        "score": 7.1,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H",
        "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": "wpForo Forum",
    "version": "0",
    "vendor": "tomdever",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}