This vulnerability arises from Undertow's inconsistent interpretation of HTTP header names compared to upstream proxies. An attacker can exploit this discrepancy by sending specially crafted HTTP requests that are parsed differently, leading to HTTP request smuggling. This can result in bypassing security controls and unauthorized resource access within the Red Hat build of Apache Camel for Spring Boot 4. The CVSS 3.1 score of 8.7 reflects network attack vector, high complexity, no privileges required, no user interaction, and a scope change with high confidentiality and integrity impacts.

Successful exploitation can allow remote attackers to bypass security controls and access unauthorized resources due to request smuggling caused by inconsistent HTTP header parsing. The confidentiality and integrity of the affected system can be severely compromised. There is no indication of impact on availability. No known exploits in the wild have been reported at this time.

Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-28368 for current remediation guidance. Until an official fix is available, organizations should monitor the advisory for updates and consider applying any recommended temporary mitigations provided by Red Hat. No vendor advisory content explicitly states that no action is required or that the issue is already mitigated.