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OpenAdvisories
Medium · 6.8 CVE-2026-34080 EUVD-2026-19945

xdg-dbus-proxy has an eavesdrop filter bypass allowing message interception

Published Apr 7, 2026 · Updated Apr 21, 2026 · Assigned by GitHub_M

Description

xdg-dbus-proxy is a filtering proxy for D-Bus connections. Prior to 0.1.7, a policy parser vulnerability allows bypassing eavesdrop restrictions. The proxy checks for eavesdrop=true in policy rules but fails to handle eavesdrop ='true' (with a space before the equals sign) and similar cases. Clients can intercept D-Bus messages they should not have access to. This vulnerability is fixed in 0.1.7.

Affected products

VendorProductAffectedFixed
flatpak xdg-dbus-proxy < 0.1.7 —

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.

ReleasePackageFixed inAdvisory
Debian 14 xdg-dbus-proxy 0.1.7-1 —
Debian 13 xdg-dbus-proxy 0.1.6-1+deb13u1 —
Debian 12 xdg-dbus-proxy 0.1.4-3+deb12u1 —
ReleasePackageFixed inAdvisory
Ubuntu 25.10 xdg-dbus-proxy 0.1.6-1ubuntu0.1 USN-8167-1
Ubuntu 24.04 LTS xdg-dbus-proxy 0.1.5-1ubuntu0.2 USN-8167-1
Ubuntu 22.04 LTS xdg-dbus-proxy 0.1.3-1ubuntu0.1 USN-8167-1
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 20.04 LTS xdg-dbus-proxy 0.1.2-1ubuntu0.1~esm1 —
ReleasePackageFixed inAdvisory
SLES 15 SP7 xdg-dbus-proxy 0.1.5-150600.3.5.1 SUSE-SU-2026:2755-1
Show 2 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 16.0 xdg-dbus-proxy 0.1.6-160000.3.1 SUSE-SU-2026:22096-1
SLES 16.0 xdg-dbus-proxy 0.1.6-160000.3.1 SUSE-SU-2026:22096-1
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed xdg-dbus-proxy 0.1.7-1.1 openSUSE-SU-2026:10625-1
openSUSE Leap 16.0 xdg-dbus-proxy 0.1.6-160000.3.1 openSUSE-SU-2026:20934-1

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 xdg-dbus-proxy No fix yet —

Advisories 5

References