lxml: Default configuration of iterparse() and ETCompatXMLParser() allows XXE to local files_CVE-2026-41066

{
    "lastseen": "",
    "description": "lxml is a library for processing XML and HTML in the Python language. Prior to 6.1.0, using either of the two parsers in the default configuration (with resolve_entities=True) allows untrusted XML input to read local files. Setting the resolve_entities option explicitly to resolve_entities='internal' or resolve_entities=False disables the local file access. This vulnerability is fixed in 6.1.0.",
    "published": "2026-04-24T16:45:19.617Z",
    "modified": "2026-04-24T18:04:04.548Z",
    "type": "cve",
    "title": "lxml: Default configuration of iterparse() and ETCompatXMLParser() allows XXE to local files",
    "source": "GitHub_M",
    "references": "https://github.com/lxml/lxml/security/advisories/GHSA-vfmq-68hx-4jfw\nhttps://bugs.launchpad.net/lxml/+bug/2146291",
    "id": "CVE-2026-41066",
    "bulletinFamily": "",
    "cwe": [
        "CWE-611"
    ],
    "cvelist": null,
    "sourceData": "lxml lxml < 6.1.0",
    "sourceHref": "",
    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
        "version": "3.1"
    },
    "cvss2": [],
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        "baseScore": 0,
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        "cvssV3": {
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    },
    "href": "",
    "category_name": "CVE",
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    "product": "lxml",
    "version": "< 6.1.0",
    "vendor": "lxml",
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}