CVE-2026-109089 is a high-severity vulnerability affecting libXi, the client-side library for the X Input Extension. Multiple security issues were identified in the X.Org client library implementations, prompting security fixes. The vulnerability impacts versions of libXi prior to 1.8.1-6.oe2403sp1. The CVSS 3.1 score is 7.5, indicating high impact on confidentiality, integrity, and availability. A patch is available in version 1.8.1-6.oe2403sp1.