Apache CXF: OAuth2: Missing JWT Audience and Issuer Validation in Access Token Validator_CVE-2026-50627

{
    "lastseen": "",
    "description": "The JwtAccessTokenValidator class in Apache CXF fails to validate the 'aud' (Audience) claims of incoming JWT access tokens. This allows a JWT issued for one Resource Server to be successfully replayed against a completely different Resource Server, leading to Token Confusion/Routing attacks. Users are recommended to upgrade to versions 4.2.2 or 4.1.7, which fixes this issue.",
    "published": "2026-06-12T08:55:41.657Z",
    "modified": "2026-06-15T19:28:36.208Z",
    "type": "cve",
    "title": "Apache CXF: OAuth2: Missing JWT Audience and Issuer Validation in Access Token Validator",
    "source": "apache",
    "references": "https://lists.apache.org/thread/0jfzz9q992957b99tw7hodcqjfyxwb1m",
    "id": "CVE-2026-50627",
    "bulletinFamily": "",
    "cwe": [
        "CWE-289"
    ],
    "cvelist": null,
    "sourceData": "Apache Software Foundation Apache CXF 4.2.0\nApache Software Foundation Apache CXF 0",
    "sourceHref": "",
    "cvss": {
        "score": 9.1,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
        "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": "Apache CXF",
    "version": "4.2.0",
    "vendor": "Apache Software Foundation",
    "ai_description": "Missing JWT Audience and Issuer Validation in Access Token Validator",
    "ai_severity": "Critical",
    "ai_vendor": "Apache Software Foundation",
    "ai_product": "Apache CXF",
    "ai_version": "4.2.0, 4.1.7",
    "ai_score": 9.1
}