{
"id": "GHSA-9mrv-8pvf-hf4m",
"aliases": [
"CVE-2026-50627"
],
"details": "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.",
"summary": "Apache CXF OAuth2 Missing JWT Audience and Issuer Validation in Access Token Validator",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "4.2.0"
},
{
"fixed": "4.2.2"
}
]
}
],
"package": {
"name": "org.apache.cxf:cxf-rt-rs-security-oauth2",
"ecosystem": "Maven"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.1.7"
}
]
}
],
"package": {
"name": "org.apache.cxf:cxf-rt-rs-security-oauth2",
"ecosystem": "Maven"
}
}
],
"modified": "2026-08-20T18:32:05Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H"
}
],
"published": "2026-06-12T12:31:33Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50627",
"type": "ADVISORY"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:37390",
"type": "WEB"
},
{
"url": "https://access.redhat.com/security/cve/CVE-2026-50627",
"type": "WEB"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2488298",
"type": "WEB"
},
{
"url": "https://github.com/apache/cxf",
"type": "PACKAGE"
},
{
"url": "https://lists.apache.org/thread/0jfzz9q992957b99tw7hodcqjfyxwb1m",
"type": "WEB"
},
{
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50627.json",
"type": "WEB"
},
{
"url": "http://www.openwall.com/lists/oss-security/2026/06/11/4",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-289",
"CWE-303"
],
"severity": "CRITICAL",
"github_reviewed": true,
"nvd_published_at": "2026-06-12T10:16:22Z",
"github_reviewed_at": "2026-08-20T18:32:04Z"
}
}