libxml2: Use after free in xmlParseInternalSubset via improper entity resolution handling_CVE-2026-6653

{
    "lastseen": "",
    "description": "Use After Free in libxml2's xmlParseInternalSubset from GNOME libxml2 version 2.9.11 to 2.11.0 allows a remote attacker to cause a denial-of-service via maliciously crafted XML input with improper entity resolution handling.",
    "published": "2026-06-22T12:40:31.424Z",
    "modified": "2026-06-22T12:40:31.424Z",
    "type": "cve",
    "title": "libxml2: Use after free in xmlParseInternalSubset via improper entity resolution handling",
    "source": "canonical",
    "references": "https://bugs.launchpad.net/ubuntu/+source/libxml2/+bug/2141260\nhttps://gitlab.gnome.org/GNOME/libxml2/-/work_items/1058",
    "id": "CVE-2026-6653",
    "bulletinFamily": "",
    "cwe": [
        "CWE-416",
        "CWE-611"
    ],
    "cvelist": null,
    "sourceData": "GNOME libxml2 2.9.11",
    "sourceHref": "",
    "cvss": {
        "score": 7,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
        "version": "4.0"
    },
    "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": "libxml2",
    "version": "2.9.11",
    "vendor": "GNOME",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}