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.
Fix
Patch, vendor advisory and mitigation references on NVD 1
- https://lists.apache.org/thread/xw95po30p8th58ms1no6b0f2375cql00 Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 5.3 · apacheNVD modified 2026-10-26 11:10
Affected (CPE criteria) 1
cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*
References 2
- https://lists.apache.org/thread/xw95po30p8th58ms1no6b0f2375cql00 Vendor Advisory
- http://www.openwall.com/lists/oss-security/2026/06/11/6 Mailing List, Third Party Advisory