OPEN-BRAIN <= 0.5.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'API Key' Setting_CVE-2026-3995

{
    "lastseen": "",
    "description": "The OPEN-BRAIN plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'API Key' settings field in all versions up to, and including, 0.5.0. This is due to insufficient input sanitization and output escaping. The plugin uses sanitize_text_field() which strips HTML tags but does not encode double quotes or other HTML-special characters needed for safe attribute context output. The API key value is saved via update_option() and later output into an HTML input element's value attribute without esc_attr() escaping. This makes it possible for authenticated attackers, with Administrator-level access, to inject arbitrary web scripts via attribute breakout payloads (e.g., double quotes followed by event handlers) that execute whenever a user accesses the plugin settings page.",
    "published": "2026-04-16T06:44:51.340Z",
    "modified": "2026-04-16T06:44:51.340Z",
    "type": "cve",
    "title": "OPEN-BRAIN <= 0.5.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'API Key' Setting",
    "source": "Wordfence",
    "references": "https://www.wordfence.com/threat-intel/vulnerabilities/id/3fe3fa95-cc1d-469b-8a97-37987b9ae362?source=cve\nhttps://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L272\nhttps://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L272\nhttps://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L252\nhttps://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L252\nhttps://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L253\nhttps://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L253\nhttps://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L128\nhttps://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L128",
    "id": "CVE-2026-3995",
    "bulletinFamily": "",
    "cwe": [
        "CWE-79"
    ],
    "cvelist": null,
    "sourceData": "faridsaniee OPEN-BRAIN 0",
    "sourceHref": "",
    "cvss": {
        "score": 4.4,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N",
        "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": "OPEN-BRAIN",
    "version": "0",
    "vendor": "faridsaniee",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}