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Vulnerability · Published Apr 7, 2026 · Assigned by GitHub_M

CVE-2026-34080xdg-dbus-proxy has an eavesdrop filter bypass allowing message interception

Medium 6.8

In plain English

A medium-severity security flaw in xdg-dbus-proxy from flatpak. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)6.8Medium
Exploit odds (30 days)0.2%top 92.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12xdg-dbus-proxy0.1.4-3+deb12u1DEBIAN-CVE-2026-34080
Debian:13xdg-dbus-proxy0.1.6-1+deb13u1DEBIAN-CVE-2026-34080
Debian:14xdg-dbus-proxy0.1.7-1DEBIAN-CVE-2026-34080
Ubuntu:22.04:LTSxdg-dbus-proxy0.1.3-1ubuntu0.1USN-8167-1
Ubuntu:22.04:LTSxdg-dbus-proxy0.1.3-1ubuntu0.1UBUNTU-CVE-2026-34080
Ubuntu:24.04:LTSxdg-dbus-proxy0.1.5-1ubuntu0.2USN-8167-1
Ubuntu:24.04:LTSxdg-dbus-proxy0.1.5-1ubuntu0.2UBUNTU-CVE-2026-34080
Ubuntu:25.10xdg-dbus-proxy0.1.6-1ubuntu0.1UBUNTU-CVE-2026-34080
Ubuntu:25.10xdg-dbus-proxy0.1.6-1ubuntu0.1USN-8167-1

Affected products (as reported)

VendorProductVersions
flatpak xdg-dbus-proxy < 0.1.7

Weakness: CWE-1289 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

References