Hackage package metadata stored XSS vulnerability_CVE-2026-40472

{
    "lastseen": "",
    "description": "In hackage-server, user-controlled metadata from .cabal files are rendered into HTML\nhref attributes without proper sanitization, enabling stored\nCross-Site Scripting (XSS) attacks.",
    "published": "2026-04-23T15:00:09.063Z",
    "modified": "2026-04-23T15:00:09.063Z",
    "type": "cve",
    "title": "Hackage package metadata stored XSS vulnerability",
    "source": "redhat-cnalr",
    "references": "https://osv.dev/vulnerability/HSEC-2026-0004",
    "id": "CVE-2026-40472",
    "bulletinFamily": "",
    "cwe": [
        "CWE-79"
    ],
    "cvelist": null,
    "sourceData": "  0.1",
    "sourceHref": "",
    "cvss": {
        "score": 9.9,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/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": "hackage-server",
    "version": "0.1",
    "vendor": "Haskell",
    "ai_description": "Stored Cross-Site Scripting (XSS) vulnerability in hackage-server due to improper sanitization of user-controlled metadata from .cabal files",
    "ai_severity": "Critical",
    "ai_vendor": "Haskell",
    "ai_product": "hackage-server",
    "ai_version": "0.1",
    "ai_score": 9.9
}