{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-50631", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-06-05T11:02:05.432Z", "datePublished": "2026-06-12T08:59:40.200Z", "dateUpdated": "2026-06-12T09:28:09.644Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected", "packageName": "org.apache.cxf:cxf-rt-rs-security-oauth2", "product": "Apache CXF", "vendor": "Apache Software Foundation", "versions": [{"lessThan": "4.2.2", "status": "affected", "version": "4.2.0", "versionType": "semver"}, {"lessThan": "4.1.7", "status": "affected", "version": "0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Guanping Zhang reported this vulnerability."}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "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.&nbsp;Users are recommended to upgrade to versions 4.2.2 or 4.1.7, which fixes this issue.<br>"}], "value": "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.\u00a0Users are recommended to upgrade to versions 4.2.2 or 4.1.7, which fixes this issue."}], "metrics": [{"other": {"content": {"text": "low"}, "type": "Textual description of severity"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-367", "description": "CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-06-12T08:59:40.200Z"}, "references": [{"tags": ["vendor-advisory"], "url": "https://lists.apache.org/thread/s83t3x4r626o9h8rt0ryr1w7w53l1vv8"}], "source": {"discovery": "UNKNOWN"}, "title": "Apache CXF: OAuth2: TOCTOU Race Condition in Refresh Token Processing", "x_generator": {"engine": "Vulnogram 0.2.0"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/06/11/8"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-06-12T09:28:09.644Z"}}]}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "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.\u00a0Users are recommended to upgrade to versions 4.2.2 or 4.1.7, which fixes this issue."}], "id": "CVE-2026-50631", "lastModified": "2026-06-12T10:16:23.070", "metrics": {}, "published": "2026-06-12T10:16:23.070", "references": [{"source": "security@apache.org", "url": "https://lists.apache.org/thread/s83t3x4r626o9h8rt0ryr1w7w53l1vv8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2026/06/11/8"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-367"}], "source": "security@apache.org", "type": "Primary"}]}

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