Insufficient HTML Sanitization Allows User-Controlled DOM Elements to Overwrite Server-Initialized Data Islands and Trigger Unintended Server-Side POST Requests_CVE-2025-14046

{
    "lastseen": "",
    "description": "An improper neutralization of input vulnerability was identified in GitHub Enterprise Server that allowed user-supplied HTML to inject DOM elements with IDs that collided with server-initialized data islands. These collisions could overwrite or shadow critical application state objects used by certain Project views, leading to unintended server-side POST requests or other unauthorized backend interactions. Successful exploitation requires an attacker to have access to the target GitHub Enterprise Server instance and to entice a privileged user to view crafted malicious content that includes conflicting HTML elements. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.18.3, 3.17.9, 3.16.12, 3.15.16, and 3.14.21.",
    "published": "2025-12-11T17:52:05.353Z",
    "modified": "2025-12-11T17:52:05.353Z",
    "type": "cve",
    "title": "Insufficient HTML Sanitization Allows User-Controlled DOM Elements to Overwrite Server-Initialized Data Islands and Trigger Unintended Server-Side POST Requests",
    "source": "GitHub_P",
    "references": "https://docs.github.com/en/[email protected]/admin/release-notes#3.18.3\nhttps://docs.github.com/en/[email protected]/admin/release-notes#3.17.9\nhttps://docs.github.com/en/[email protected]/admin/release-notes#3.16.12\nhttps://docs.github.com/en/[email protected]/admin/release-notes#3.15.16\nhttps://docs.github.com/en/[email protected]/admin/release-notes#3.14.21",
    "id": "CVE-2025-14046",
    "bulletinFamily": "",
    "cwe": [
        "CWE-79"
    ],
    "cvelist": null,
    "sourceData": "GitHub Enterprise Server 3.18.0\nGitHub Enterprise Server 3.17.0\nGitHub Enterprise Server 3.16.0\nGitHub Enterprise Server 3.15.0\nGitHub Enterprise Server 3.14.0",
    "sourceHref": "",
    "cvss": {
        "score": 8.6,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
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            "privilegesRequired": "",
            "userInteraction": "",
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            "confidentialityImpact": "",
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Enterprise Server",
    "version": "3.19.0",
    "vendor": "GitHub",
    "ai_description": "Insufficient HTML sanitization allows user-controlled DOM elements to overwrite server-initialized data islands and trigger unintended server-side POST requests",
    "ai_severity": "High",
    "ai_vendor": "GitHub",
    "ai_product": "GitHub Enterprise Server",
    "ai_version": "Prior to 3.18.3, 3.17.9, 3.16.12, 3.15.16, and 3.14.21",
    "ai_score": 8.6
}