Unauthorized User Impersonation when Using X.509 Client Certificates_CVE-2026-22747

{
    "lastseen": "",
    "description": "Vulnerability in Spring Spring Security.\u00a0SubjectX500PrincipalExtractor\u00a0does not correctly handle certain malformed X.509 certificate\u00a0CN\u00a0values, which can lead to reading the wrong value for the username. In a carefully crafted certificate, this can lead to an attacker impersonating another user.\nThis issue affects Spring Security: from 7.0.0 through 7.0.4.",
    "published": "2026-04-22T05:08:41.318Z",
    "modified": "2026-04-22T05:08:41.318Z",
    "type": "cve",
    "title": "Unauthorized User Impersonation when Using X.509 Client Certificates",
    "source": "vmware",
    "references": "https://spring.io/security/cve-2026-22747",
    "id": "CVE-2026-22747",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Spring Spring Security 7.0.0",
    "sourceHref": "",
    "cvss": {
        "score": 6.8,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/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": "Spring Security",
    "version": "7.0.0",
    "vendor": "Spring",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}