Bypass of client certificate verification with transfer over TLS_CVE-2026-12490

{
    "lastseen": "",
    "description": "When a provide-xfr is given with a tls-auth-name, a secondary requesting a transfer should provide a client certificate with that name. However, no client certificate is needed when the request comes in over TLS over the regular tls-port (and not the tls-auth-port) or over over TCP over the regular port, when the other conditions of the provide-xfr rule match.",
    "published": "2026-06-25T05:24:41.814Z",
    "modified": "2026-06-25T05:24:41.814Z",
    "type": "cve",
    "title": "Bypass of client certificate verification with transfer over TLS",
    "source": "NLnet Labs",
    "references": "https://www.nlnetlabs.nl/downloads/nsd/CVE-2026-12490.txt",
    "id": "CVE-2026-12490",
    "bulletinFamily": "",
    "cwe": [
        "CWE-306",
        "CWE-284"
    ],
    "cvelist": null,
    "sourceData": "NLnet Labs NSD 4.10.1",
    "sourceHref": "",
    "cvss": {
        "score": 8.2,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
        "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": "NSD",
    "version": "4.10.1",
    "vendor": "NLnet Labs",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}