Use after free when parsing EDNS options in Lua_CVE-2026-27854

{
    "lastseen": "",
    "description": "An attacker might be able to trigger a use-after-free by sending crafted DNS queries to a DNSdist using the DNSQuestion:getEDNSOptions method in custom Lua code. In some cases DNSQuestion:getEDNSOptions might refer to a version of the DNS packet that has been modified, thus triggering a use-after-free and potentially a crash resulting in denial of service.",
    "published": "2026-03-31T12:06:46.648Z",
    "modified": "2026-04-02T13:46:22.087Z",
    "type": "cve",
    "title": "Use after free when parsing EDNS options in Lua",
    "source": "OX",
    "references": "https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-02.html",
    "id": "CVE-2026-27854",
    "bulletinFamily": "",
    "cwe": [
        "",
        "CWE-416"
    ],
    "cvelist": null,
    "sourceData": "PowerDNS DNSdist 1.9.0\nPowerDNS DNSdist 2.0.0",
    "sourceHref": "",
    "cvss": {
        "score": 4.8,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L",
        "version": "3.1"
    },
    "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": "DNSdist",
    "version": "1.9.0",
    "vendor": "PowerDNS",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}