Multiple Plugins – Unauthenticated Stored XSS via Minify Library_CVE-2026-3220

{
    "lastseen": "",
    "description": "The Autoptimize WordPress plugin before 3.1.15, Clearfy Cache  WordPress plugin before 2.4.2, Speed Optimizer  WordPress plugin before 7.7.9 are vulnerable to unauthenticated Stored Cross-Site Scripting (XSS) due to a predictable replacement hash used during the HTML minification process and abusing a regular expression. This allows an attacker to inject arbitrary HTML attributes in the final HTML output by anticipating the placeholder format.",
    "published": "2026-05-18T06:00:08.130Z",
    "modified": "2026-05-18T13:40:11.175Z",
    "type": "cve",
    "title": "Multiple Plugins - Unauthenticated Stored XSS via Minify Library",
    "source": "WPScan",
    "references": "https://wpscan.com/vulnerability/3ceabf11-23cd-4c38-ba14-014348b0ff2d/",
    "id": "CVE-2026-3220",
    "bulletinFamily": "",
    "cwe": [
        "",
        "CWE-79"
    ],
    "cvelist": null,
    "sourceData": "Unknown Autoptimize 0\nUnknown Clearfy Cache 0\nUnknown Speed Optimizer 0",
    "sourceHref": "",
    "cvss": {
        "score": 8.8,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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": "Autoptimize",
    "version": "0",
    "vendor": "Unknown",
    "ai_description": "Unauthenticated Stored Cross-Site Scripting (XSS) vulnerability in multiple WordPress plugins due to a predictable replacement hash used during the HTML minification process.",
    "ai_severity": "High",
    "ai_vendor": "Autoptimize, Clearfy, Speed Optimizer",
    "ai_product": "Autoptimize, Clearfy Cache, Speed Optimizer",
    "ai_version": "3.1.15, 2.4.2, 7.7.9",
    "ai_score": 8.8
}