Libxml2: libxml2: denial of service via uncontrolled recursion in xml catalog processing_CVE-2026-0990

{
    "lastseen": "",
    "description": "A flaw was found in libxml2, an XML parsing library. This uncontrolled recursion vulnerability occurs in the xmlCatalogXMLResolveURI function when an XML catalog contains a delegate URI entry that references itself. A remote attacker could exploit this configuration-dependent issue by providing a specially crafted XML catalog, leading to infinite recursion and call stack exhaustion. This ultimately results in a segmentation fault, causing a Denial of Service (DoS) by crashing affected applications.",
    "published": "2026-01-15T14:20:06.515Z",
    "modified": "2026-01-15T14:20:06.515Z",
    "type": "cve",
    "title": "Libxml2: libxml2: denial of service via uncontrolled recursion in xml catalog processing",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2026-0990\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2429959",
    "id": "CVE-2026-0990",
    "bulletinFamily": "",
    "cwe": [
        "CWE-674"
    ],
    "cvelist": null,
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    "cvss": {
        "score": 5.9,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
        "version": "3.1"
    },
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    "href": "",
    "category_name": "CVE",
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    "product": "Red Hat Enterprise Linux 10",
    "version": "",
    "vendor": "Red Hat",
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}