CVE-2026-61466

critical · 9.1

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.

9.1

CVSS

0.4%

EPSS (exploit prob.)

36th

EPSS percentile

2026-08-06

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Weaknesses

CWE-304

Affected products

Vendor	Product	Affected versions
apache	cxf	< 3.6.12
apache	cxf	>= 4.0.0, < 4.1.8
apache	cxf	>= 4.2.0, < 4.2.3

Check a specific version with /api/v1/cve/match.

References

https://lists.apache.org/thread/2l1r16g79tpxd7fzrzr2q9oscwrjgljs
http://www.openwall.com/lists/oss-security/2026/08/06/21

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-61466