# CVE-2026-61466

## Summary

- **CVE ID:** CVE-2026-61466
- **Severity:** CRITICAL
- **CVSS Score:** 9.1 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H)
- **CWE:** CWE-304
- **Published:** Aug 6, 2026
- **Last Modified:** Aug 7, 2026

## Description

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.

## Affected Products

- Apache Software Foundation — Apache CXF (0)
- Apache Software Foundation — Apache CXF (4.0.0)
- Apache Software Foundation — Apache CXF (4.2.0)

## References

- [CNA](https://lists.apache.org/thread/2l1r16g79tpxd7fzrzr2q9oscwrjgljs)
- [CVE](http://www.openwall.com/lists/oss-security/2026/08/06/21)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.42%
- **EPSS Percentile:** 35.8

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._