CVE-2026-61466

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

06/08/2026

Last modified:

07/08/2026

Description

In Apache CXF&#39;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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.10 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): High

Base Score 3.x

9.10

Severity 3.x

CRITICAL

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:apache:cxf::::::::		3.6.12 (excluding)
cpe:2.3:a:apache:cxf::::::::	4.0.0 (including)	4.1.8 (excluding)
cpe:2.3:a:apache:cxf::::::::	4.2.0 (including)	4.2.3 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-61466

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools