CVE-2026-50630

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://lists.apache.org/thread/bt7vnjzzkpd6vdhkxv103poor1jy5trm	Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/06/11/7	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:apache:cxf::::::::
	cpe:2.3:a:apache:cxf::::::::

History

26 Oct 2026, 11:10

Type	Values Removed	Values Added
Summary		(es) Una vulnerabilidad de inyección CRLF existe en la clase OAuth2 AuthorizationUtils. Al construir el encabezado de respuesta WWW-Authenticate, el parámetro ’realm’ se concatena sin sanear los caracteres de Retorno de Carro (CR) y Salto de Línea (LF). Si un atacante puede controlar el valor ’realm’, pueden inyectar encabezados HTTP arbitrarios o dividir la respuesta HTTP por completo. Se recomienda a los usuarios actualizar a las versiones 4.2.2 o 4.1.7, lo que soluciona este problema.

Information

Published : 2026-06-12 10:16

Updated : 2026-10-26 11:10

NVD link : CVE-2026-50630

Mitre link : CVE-2026-50630

CVE.ORG link : CVE-2026-50630

JSON object : View

Products Affected

apache

cxf

CWE

CWE-113

Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')

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