The vulnerability arises from Undertow's improper processing of HTTP requests where the first header line begins with one or more spaces. Undertow strips these leading spaces, which is non-compliant with HTTP standards, leading to inconsistent interpretation of HTTP requests. This inconsistency can be exploited by attackers to perform HTTP request smuggling attacks against the Red Hat build of Apache Camel for Spring Boot 4. Such attacks can bypass security mechanisms, access unauthorized information, or manipulate web caches, potentially resulting in unauthorized actions or data exposure. The CVSS 3.1 vector indicates network attack vector, high attack complexity, no privileges required, no user interaction, scope changed, and high impact on confidentiality and integrity but no impact on availability.

Successful exploitation of this vulnerability can allow remote attackers to bypass security mechanisms, gain unauthorized access to restricted information, or manipulate web caches. This can lead to unauthorized actions and data exposure. The CVSS score of 8.7 reflects a high impact on confidentiality and integrity, with no impact on availability. There are no known exploits in the wild currently.

The vendor advisory does not provide explicit information about patch availability or remediation steps. Patch status is not yet confirmed — check the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-28369 for current remediation guidance. Until an official fix is available, organizations should monitor vendor communications closely and consider mitigating exposure by restricting access to affected services or applying relevant workarounds if provided by Red Hat.