xdg-dbus-proxy: An incorrect implementation of message filtering in xdg-dbus-proxy versions before 0.1.9 allows an attacker to bypass...
CVE-2026-94422 is fixed in 3 products on 1 platform, first by RHSA-2026:91626, released September 23, 2026. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| xdg-dbus-proxy · Debian 12.15 (bookworm) | 0.1.4-3+deb12u2 | DEBIAN-CVE-2026-94422 | Sep 23, 2026 |
| xdg-dbus-proxy · Debian 13.5 (trixie) | 0.1.6-1+deb13u3 | DEBIAN-CVE-2026-94422 | Sep 23, 2026 |
| xdg-dbus-proxy · Debian 14 | 0.1.9-1 | DEBIAN-CVE-2026-94422 | Sep 23, 2026 |
| xdg-dbus-proxy · Fedora 43 | 0.1.9-1.fc43 | FEDORA-2026-E1CAC11588 | Sep 28, 2026 |
| xdg-dbus-proxy · RHEL 10 | 0.1.5-4.el10_0.1 | RHSA-2026:91626 | Sep 23, 2026 |
| xdg-dbus-proxy · RHEL 9 | 0:0.1.3-1.el9_8.1 | RHSA-2026:90522 | Oct 29, 2026 |
| xdg-dbus-proxy · almalinux 10 | 0.1.5-4.el10_2.1 | ALSA-2026:90523 | Nov 7, 2026 |
| xdg-dbus-proxy · almalinux 9 | 0.1.3-1.el9_8.1 | ALSA-2026:90522 | Nov 7, 2026 |
| xdg-dbus-proxy · amzn 2023 | 0.1.9-1.amzn2023.0.1 | ALAS2023-2026-3185 | Nov 7, 2026 |
| xdg-dbus-proxy · ol 10 | 0:0.1.5-4.el10_2.1 | ELSA-2026-90523 | Nov 7, 2026 |
| xdg-dbus-proxy · ol 9 | 0:0.1.3-1.el9_8.1 | ELSA-2026-90522 | Nov 7, 2026 |
| xdg-dbus-proxy · rocky 10 | 0:0.1.5-4.el10_2.1 | RLSA-2026:90523 | Nov 7, 2026 |
| xdg-dbus-proxy · rocky 9 | 0:0.1.3-1.el9_8.1 | RLSA-2026:90522 | Nov 7, 2026 |
| xdg-dbus-proxy-debuginfo · Fedora 43 | 0.1.9-1.fc43 | FEDORA-2026-E1CAC11588 | Sep 28, 2026 |
| xdg-dbus-proxy-debuginfo · amzn 2023 | 0.1.9-1.amzn2023.0.1 | ALAS2023-2026-3185 | Nov 7, 2026 |
| xdg-dbus-proxy-debugsource · Fedora 43 | 0.1.9-1.fc43 | FEDORA-2026-E1CAC11588 | Sep 28, 2026 |
| xdg-dbus-proxy-debugsource · amzn 2023 | 0.1.9-1.amzn2023.0.1 | ALAS2023-2026-3185 | Nov 7, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.