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CVE-2026-50630 A CRLF injection vulnerability exists in the OAuth2 AuthorizationUtils class
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 or 3.6.12, which fixes this issue.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Apache CXF 4.2 | 4.2.0 → < 4.2.2 | 4.2.2 |
| Apache CXF 4.0 | 4.0.0 → < 4.1.7 | 4.1.7 |
| Apache CXF 3.6 | earliest → < 3.6.12 | 3.6.12 |
References
- lists.apache.org lists.apache.org
Timeline
- Published
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