Gnutls: gnutls: security bypass due to incorrect name constraint handling_CVE-2026-42011

{
    "lastseen": "",
    "description": "A flaw was found in gnutls. This vulnerability occurs because permitted name constraints were incorrectly ignored when previous Certificate Authorities (CAs) only had excluded name constraints. A remote attacker could exploit this to bypass critical name constraint checks during certificate validation. This bypass could lead to the acceptance of invalid certificates, potentially enabling spoofing or man-in-the-middle attacks against affected systems.",
    "published": "2026-05-07T13:51:04.695Z",
    "modified": "2026-05-07T14:55:17.287Z",
    "type": "cve",
    "title": "Gnutls: gnutls: security bypass due to incorrect name constraint handling",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2026-42011\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2467437",
    "id": "CVE-2026-42011",
    "bulletinFamily": "",
    "cwe": [
        "CWE-295"
    ],
    "cvelist": null,
    "sourceData": "",
    "sourceHref": "",
    "cvss": {
        "score": 7.4,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
        "version": "3.1"
    },
    "cvss2": [],
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        "baseScore": 0,
        "baseSeverity": "",
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        "privilegesRequired": "",
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        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Red Hat Enterprise Linux 10",
    "version": "",
    "vendor": "Red Hat",
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    "ai_score": 0
}