CVE-2026-50630
Published:June 12, 2026
Updated:June 28, 2026
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 Packages
https://github.com/apache/cxf.git (GITHUB):
Affected version(s) >=cxf-2.1 <cxf-4.1.7Fix Suggestion:
Update to version cxf-4.1.7https://github.com/apache/cxf.git (GITHUB):
Affected version(s) >=cxf-4.2.0 <cxf-4.2.2Fix Suggestion:
Update to version cxf-4.2.2org.apache.cxf:cxf-rt-rs-security-oauth2 (JAVA):
Affected version(s) >=4.2.0 <4.2.2Fix Suggestion:
Update to version 4.2.2org.apache.cxf:cxf-rt-rs-security-oauth2 (JAVA):
Affected version(s) >=2.6.0 <4.1.7Fix Suggestion:
Update to version 4.1.7Related Resources (2)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')
EPSS
Base Score:
0.40