# CVE-2026-50630

## Summary

- **CVE ID:** CVE-2026-50630
- **Severity:** MEDIUM
- **CVSS Score:** 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)
- **CWE:** CWE-113
- **Published:** Jun 12, 2026
- **Last Modified:** Aug 7, 2026

## Description

A CRLF injection vulnerability exists in the OAuth2 AuthorizationUtils class. When constructing the WWW-Authenticate response header, the 'realm' parameter is concatenated without sanitizing Carriage Return (CR) and Line Feed (LF) characters. If an attacker can control the realm value, they can inject arbitrary HTTP headers or split the HTTP response entirely. Users are recommended to upgrade to versions 4.2.2 or 4.1.7, which fixes this issue.

## Affected Products

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

## References

- [CNA](https://lists.apache.org/thread/bt7vnjzzkpd6vdhkxv103poor1jy5trm)
- [CVE](http://www.openwall.com/lists/oss-security/2026/06/11/7)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.36%
- **EPSS Percentile:** 29.3

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