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CVE PROGRAM SOURCE RECORD6.5 Medium

CVE-2026-50630

Apache CXF: OAuth2: HTTP Response Splitting via WWW-Authenticate Realm Injection

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Status
Published
Published
Updated
Assigning organization
apache

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

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Apache Software Foundation Apache CXF

Default version status: unaffected

  • 4.2.0 to < 4.2.2affected
  • 4.0.0 to < 4.1.7affected
  • 0 to < 3.6.12affected

References