Nextcloud Server vulnerable to XSS in SVG images when opened outside of Nextcloud_CVE-2025-66512

{
    "lastseen": "",
    "description": "Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server and Server Enterprise prior to 31.0.12 and 32.0.3, a missing sanitization allowed malicious users to circumvent the content security policy when a malicious user manages to trick a user it viewing an uploaded SVG outside of the Nextcloud Servers web page.",
    "published": "2025-12-05T16:22:50.206Z",
    "modified": "2025-12-05T20:05:05.069Z",
    "type": "cve",
    "title": "Nextcloud Server vulnerable to XSS in SVG images when opened outside of Nextcloud",
    "source": "GitHub_M",
    "references": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qcw2-p26m-9gc5\nhttps://github.com/nextcloud/viewer/pull/3023\nhttps://github.com/nextcloud/viewer/commit/5044a27d61bc40c0f134298d36af91f865335b63\nhttps://hackerone.com/reports/3357808",
    "id": "CVE-2025-66512",
    "bulletinFamily": "",
    "cwe": [
        "CWE-80"
    ],
    "cvelist": null,
    "sourceData": "nextcloud security-advisories >= 32.0.0beta1, < 32.0.3\nnextcloud security-advisories < 31.0.12",
    "sourceHref": "",
    "cvss": {
        "score": 5.4,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L",
        "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": "security-advisories",
    "version": ">= 32.0.0beta1, < 32.0.3",
    "vendor": "nextcloud",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}