Cross-Site Scripting (XSS) in Looker’s Extension Loader leading to Admin Account Compromise_CVE-2025-12739

{
    "lastseen": "",
    "description": "An attacker with viewer permissions in Looker could craft a malicious URL that, when opened by a Looker admin, would execute an attacker-supplied script. Exploitation required at least one Looker extension installed on the instance.\n\nLooker-hosted and Self-hosted were found to be vulnerable.\nThis issue has already been mitigated for Looker-hosted instances.\u00a0No user action is required for these.\n\n\nSelf-hosted instances must be upgraded as soon as possible. This vulnerability has been patched in all supported versions of Self-hosted.\nThe versions below have all been updated to protect from this vulnerability. You can download these versions at the Looker download page  https://download.looker.com/ :  *  24.18.201+\n  *  25.0.79+\n  *  25.6.66+\n  *  25.12.7+\n  *  25.16.0+\n  *  25.18.0+\n  *  25.20.0+",
    "published": "2025-11-24T09:11:38.396Z",
    "modified": "2025-11-24T09:11:38.396Z",
    "type": "cve",
    "title": "Cross-Site Scripting (XSS) in Looker's Extension Loader leading to Admin Account Compromise",
    "source": "GoogleCloud",
    "references": "https://cloud.google.com/support/bulletins#gcp-2025-068",
    "id": "CVE-2025-12739",
    "bulletinFamily": "",
    "cwe": [
        "CWE-79"
    ],
    "cvelist": null,
    "sourceData": "Google Cloud Looker 0\nGoogle Cloud Looker 0\nGoogle Cloud Looker 0\nGoogle Cloud Looker 0\nGoogle Cloud Looker 0\nGoogle Cloud Looker 0\nGoogle Cloud Looker 0\nGoogle Cloud Looker 0\nGoogle Cloud Looker 0\nGoogle Cloud Looker 0\nGoogle Cloud Looker 0\nGoogle Cloud Looker 0\nGoogle Cloud Looker 0\nGoogle Cloud Looker 0",
    "sourceHref": "",
    "cvss": {
        "score": 7.3,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/U:Red",
        "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": "Looker",
    "version": "0",
    "vendor": "Google Cloud",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}