What is CVE-2026-61466?

CVE-2026-61466 is a critical-severity vulnerability in Apache Cxf, classified under Missing Critical Step in Authentication. CVSS score: 9.1/10. Published 2026-08-06.

How severe is CVE-2026-61466?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Apache Cxf

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 co…

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

Affected products

Apache Cxf
Apache Software Foundation Cxf — versions 0, 4.0.0, 4.2.0

Weakness classification (CWE)

CWE-304 — Missing Critical Step in Authentication

References

security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)

Frequently asked questions

What is CVE-2026-61466?: CVE-2026-61466 is a critical-severity vulnerability in Apache Cxf, classified under Missing Critical Step in Authentication. CVSS score: 9.1/10. Published 2026-08-06.
How severe is CVE-2026-61466?: Critical severity. CVSS v3 base score is 9.1 out of 10.