Description
xdg-dbus-proxy incorrectly filters D-Bus broadcast messages, bypassing configured path, interface, and member restrictions. This allows a sandboxed Flatpak application to intercept broadcast signals on the D-Bus session bus and AT-SPI bus that should be restricted, potentially exposing sensitive information to unauthorized applications.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | xdg-dbus-proxy | 0.1.8-1 | — |
| Debian 13 | xdg-dbus-proxy | 0.1.6-1+deb13u2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | xdg-dbus-proxy | No fix yet | — |
| Ubuntu 24.04 LTS | xdg-dbus-proxy | No fix yet | — |
| Ubuntu 22.04 LTS | xdg-dbus-proxy | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | xdg-dbus-proxy | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | flatpak | 1.18.3-1.1 | openSUSE-SU-2026:11873-1 |
| openSUSE Tumbleweed | xdg-dbus-proxy | 0.1.9-1.1 | openSUSE-SU-2026:11913-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | xdg-dbus-proxy | No fix yet | — |
Advisories 2
- openSUSE-SU-2026:11913-1 xdg-dbus-proxy-0.1.9-1.1 on GA media SUSE / openSUSE Security Updates · Sep 29, 2026
- openSUSE-SU-2026:11873-1 flatpak-1.18.3-1.1 on GA media SUSE / openSUSE Security Updates · Sep 25, 2026
References
- https://access.redhat.com/security/cve/CVE-2026-93676 vdb-entry
- RHBZ#2537014 issue-tracking