CVE-2026-50630
Apache CXF: OAuth2: HTTP Response Splitting via WWW-Authenticate Realm Injection
Published: Jun 12, 2026Updated: Jun 12, 2026 Sources: CVE List NVD
6.5CVSS
MEDIUMA 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.
EPSS Score
0.0%
Top 91.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:LConfidentialityLow
I:LIntegrityLow
A:NAvailabilityNone
Weaknesses
Affected Products
Exploitability
No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
References
Timeline
Published
Jun 12, 2026
Last Updated
Jun 12, 2026
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