RHSA-2026:90522 — Security Advisory

An update for xdg-dbus-proxy is now available for Red Hat Enterprise Linux 9.8 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

xdg-dbus-proxy is a filtering proxy for D-Bus connections. It was originally part of the flatpak project, but it has been broken out as a standalone module to facilitate using it in other contexts.

Security Fix(es):

• xdg-dbus-proxy: xdg-dbus-proxy: message filtering bypass via reply serial allows sandbox escape (CVE-2026-94422)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.