ZeM STL <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes_CVE-2026-4081

{
    "lastseen": "",
    "description": "The ZeM STL plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the [zemstl] shortcode in all versions up to and including 1.0. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes, specifically the 'url', 'color', and 'bgcolor' parameters. These attribute values are directly interpolated into HTML attribute context without being passed through esc_attr() or any other escaping function. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.",
    "published": "2026-06-02T07:48:26.899Z",
    "modified": "2026-06-02T07:48:26.899Z",
    "type": "cve",
    "title": "ZeM STL <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes",
    "source": "Wordfence",
    "references": "https://www.wordfence.com/threat-intel/vulnerabilities/id/07e415f9-42f1-4c80-a023-38f460f634d3?source=cve\nhttps://plugins.trac.wordpress.org/browser/zem-stl-viewer/trunk/zemstl.php#L107\nhttps://plugins.trac.wordpress.org/browser/zem-stl-viewer/tags/1.0/zemstl.php#L107\nhttps://plugins.trac.wordpress.org/browser/zem-stl-viewer/trunk/zemstl.php#L74\nhttps://plugins.trac.wordpress.org/browser/zem-stl-viewer/tags/1.0/zemstl.php#L74\nhttps://plugins.trac.wordpress.org/browser/zem-stl-viewer/trunk/zemstl.php#L103\nhttps://plugins.trac.wordpress.org/browser/zem-stl-viewer/tags/1.0/zemstl.php#L103\nhttps://plugins.trac.wordpress.org/browser/zem-stl-viewer/trunk/zemstl.php#L104\nhttps://plugins.trac.wordpress.org/browser/zem-stl-viewer/tags/1.0/zemstl.php#L104",
    "id": "CVE-2026-4081",
    "bulletinFamily": "",
    "cwe": [
        "CWE-79"
    ],
    "cvelist": null,
    "sourceData": "jhdscript ZeM STL 0",
    "sourceHref": "",
    "cvss": {
        "score": 6.4,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/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": "ZeM STL",
    "version": "0",
    "vendor": "jhdscript",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}