{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-61466", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-07-09T14:46:58.308Z", "datePublished": "2026-08-06T11:24:27.466Z", "dateUpdated": "2026-08-07T00:01:45.092Z" }, "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": "3.6.12", "status": "affected", "version": "0", "versionType": "semver" }, { "lessThan": "4.1.8", "status": "affected", "version": "4.0.0", "versionType": "semver" }, { "lessThan": "4.2.3", "status": "affected", "version": "4.2.0", "versionType": "semver" } ] } ], "credits": [ { "lang": "en", "type": "finder", "value": "Guanping Zhang reported this vulnerability." } ], "descriptions": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "

In Apache CXF's OAuth2 Dynamic Client Registration endpoint, the authorization server accepts and stores the `scope` value supplied in the client registration request verbatim, without validating it against an AS-defined allowlist. This could lead to a client self-assigning privileged scopes at registration time. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.

" } ], "value": "In Apache CXF's OAuth2 Dynamic Client Registration endpoint, the authorization server accepts and stores the `scope` value supplied in the client registration request verbatim, without validating it against an AS-defined allowlist. This could lead to a client self-assigning privileged scopes at registration time. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue." } ], "metrics": [ { "other": { "content": { "text": "moderate" }, "type": "Textual description of severity" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-304", "description": "CWE-304 Missing Critical Step in Authentication", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-08-06T11:24:27.466Z" }, "references": [ { "tags": [ "vendor-advisory" ], "url": "https://lists.apache.org/thread/2l1r16g79tpxd7fzrzr2q9oscwrjgljs" } ], "source": { "discovery": "UNKNOWN" }, "title": "Apache CXF: OAuth2 Dynamic Client Registration Scope Self-Escalation", "x_generator": { "engine": "Vulnogram 0.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2026-08-06T15:19:01.154800Z", "id": "CVE-2026-61466", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-06T15:19:29.688Z" } }, { "title": "CVE Program Container", "references": [ { "url": "http://www.openwall.com/lists/oss-security/2026/08/06/21" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-08-07T00:01:45.092Z" } } ] } }