CVE-2026-61466 (GCVE-0-2026-61466)

Vulnerability from cvelistv5 – Published: 2026-08-06 11:24 – Updated: 2026-08-07 00:01
VLAI
Title
Apache CXF: OAuth2 Dynamic Client Registration Scope Self-Escalation
Summary
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.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 15:19 UTC
CWE
  • CWE-304 - Missing Critical Step in Authentication
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 1078 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Apache Software Foundation Apache CXF Affected: 0 , < 3.6.12 (semver)
Affected: 4.0.0 , < 4.1.8 (semver)
Affected: 4.2.0 , < 4.2.3 (semver)
guessed Create a notification for this product.
Credits
Guanping Zhang reported this vulnerability.
Show details on NVD website
To clipboard 

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