Is CVE-2026-94422 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-94422?

CVE-2026-94422 has a CVSS v3 severity of HIGH (8.8).

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CVE-2026-94422

Description

An incorrect implementation of message filtering in xdg-dbus-proxy versions before 0.1.9 allows an attacker to bypass the intended message filtering on the D-Bus session bus by setting a reply serial number on non-reply messages. A malicious or compromised Flatpak app could use this to achieve arbitrary code execution outside its sandbox. xdg-dbus-proxy was designed to be part of the sandbox boundary for Flatpak, but it is released as a separate project and is sometimes used by other app frameworks such as Firejail.