CVE-2026-61466

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.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://lists.apache.org/thread/2l1r16g79tpxd7fzrzr2q9oscwrjgljs	Mailing List Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/08/06/21

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:apache:cxf::::::::
	cpe:2.3:a:apache:cxf::::::::
	cpe:2.3:a:apache:cxf::::::::

History

23 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) En el endpoint de registro dinámico de cliente OAuth2 de Apache CXF, el servidor de autorización acepta y almacena el valor ’scope’ proporcionado en la solicitud de registro de cliente tal cual, sin validarlo contra una lista de permitidos definida por el AS. Esto podría llevar a que un cliente se autoasigne ámbitos privilegiados en el momento del registro. Se recomienda a los usuarios actualizar a las versiones 4.2.3 o 4.1.8 o 3.6.12, que solucionan este problema.

Information

Published : 2026-08-06 12:16

Updated : 2026-10-24 16:10

NVD link : CVE-2026-61466

Mitre link : CVE-2026-61466

CVE.ORG link : CVE-2026-61466

JSON object : View

Products Affected

apache

cxf

CWE

CWE-304

Missing Critical Step in Authentication

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