CVE-2026-50631

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Source
https://cve.org/CVERecord?id=CVE-2026-50631
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-50631.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-50631
Aliases
Published
2026-06-12T08:59:40.200Z
Modified
2026-08-20T18:48:08.279103148Z
Severity
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
Apache CXF: OAuth2: TOCTOU Race Condition in Refresh Token Processing
Details

A race condition in AbstractOAuthDataProvider allows concurrent requests using the same Refresh Token to bypass single-use semantics and generate multiple valid Access Tokens, when 'recycleRefreshTokens' is set to false. A leaked refresh token can be replayed concurrently by multiple attackers or threads. Users are recommended to upgrade to versions 4.2.2 or 4.1.7 or 3.6.12, which fixes this issue.

Database specific 
{
    "cna_assigner": "apache",
    "cwe_ids": [
        "CWE-367"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50631.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "4.2.0"
                },
                {
                    "fixed": "4.2.2"
                },
                {
                    "introduced": "4.0.0"
                },
                {
                    "fixed": "4.1.7"
                },
                {
                    "fixed": "3.6.12"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/apache/cxf

Affected ranges

Type
GIT
Repo
https://github.com/apache/cxf
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
82e9f60f994a7fad2d89f3c94e9090a4a8990c70
Introduced
04ccbfd709eef8f4af53d6237514fbe9db7ea81f
Fixed
d2b2776cd44a8d2f391194d90f50ce7b3d61a1f6
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "4.1.7"
        },
        {
            "introduced": "4.2.0"
        },
        {
            "fixed": "4.2.2"
        }
    ],
    "cpe": "cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*",
    "source": "CPE_RANGE"
}

Affected versions

cxf-2.*
cxf-2.1
cxf-2.1.2
cxf-2.2
cxf-2.2.1
cxf-2.2.2
cxf-2.3.0
cxf-2.4.0
cxf-2.5.0
cxf-2.5.1
cxf-2.6.0
cxf-2.6.1
cxf-2.7.0
cxf-2.7.1
cxf-2.7.2
cxf-3.*
cxf-3.0.0
cxf-3.0.0-milestone2
cxf-3.1.0
cxf-3.1.1
cxf-3.1.2
cxf-3.1.3
cxf-3.1.4
cxf-3.2.0
cxf-3.2.1
cxf-3.2.2
cxf-3.2.3
cxf-3.2.4
cxf-3.2.5
cxf-3.3.0
cxf-3.3.1
cxf-3.3.2
cxf-3.3.3
cxf-3.4.0
cxf-3.4.1
cxf-3.5.0
cxf-4.*
cxf-4.0.0
cxf-4.0.1
cxf-4.0.2
cxf-4.0.3
cxf-4.0.4
cxf-4.1.0
cxf-4.1.1
cxf-4.1.2
cxf-4.1.3
cxf-4.1.4
cxf-4.1.5
cxf-4.1.6
cxf-4.2.0
cxf-4.2.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-50631.json"