Information about ECS zero scoped answers might leak to clients that use a specific ECS_CVE-2026-40012

{
    "lastseen": "",
    "description": "ECS zero scoped answers are stored in the packet cache while they should not. This impacts only configurations that have ECS enabled;",
    "published": "2026-06-25T12:58:51.987Z",
    "modified": "2026-06-25T14:41:00.796Z",
    "type": "cve",
    "title": "Information about ECS zero scoped answers might leak to clients that use a specific ECS",
    "source": "OX",
    "references": "https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-08.html",
    "id": "CVE-2026-40012",
    "bulletinFamily": "",
    "cwe": [
        "",
        "CWE-524"
    ],
    "cvelist": null,
    "sourceData": "PowerDNS Recursor 5.2.0\nPowerDNS Recursor 5.3.0\nPowerDNS Recursor 5.4.0",
    "sourceHref": "",
    "cvss": {
        "score": 5.3,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
        "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": "Recursor",
    "version": "5.2.0",
    "vendor": "PowerDNS",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}