CVE-2026-50629

The 'clientId' parameter from incoming HTTP requests is directly concatenated into OAuth2 server log warning messages without sanitizing control characters. This allows an attacker to inject arbitrary content, including fake log entries, into the server's log files. Users are recommended to upgrade to versions 4.2.2 or 4.1.7 or 3.6.12, which fixes this issue.

Score

CVSS 3.1 5.3 Medium

Status

Modified - security@apache.org

Published

2026-06-12

Last modified

2026-10-26

Weaknesses

CWE-93

Affected products

• Cxf (Apache)
• Apache Cxf (Apache Software Foundation)

References

• https://lists.apache.org/thread/xw95po30p8th58ms1no6b0f2375cql00
• http://www.openwall.com/lists/oss-security/2026/06/11/6