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.

The remote Fedora 44 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-205fd328d2 advisory.

    Update the package, including fix for     [CVE-2026-34080](https://access.redhat.com/security/cve/cve-2026-34080). See also: [upstream security     advisory](https://github.com/flatpak/xdg-dbus-proxy/security/advisories/GHSA-vjp5-hjfm-7677)



Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 12 host has packages installed that are affected by a vulnerability as referenced in the dsa-6224 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6224-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     April 22, 2026                        https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : xdg-dbus-proxy     CVE ID         : CVE-2026-34080

    It was discovered that incorrect parsing of policy rules in the     xdg-dbus-proxy (a filtering proxy for D-Bus connections) allowed the     bypass of eavesdrop restrictions, which could result in information     disclosure.

    For the oldstable distribution (bookworm), this problem has been fixed     in version 0.1.4-3+deb12u1.

    We recommend that you upgrade your xdg-dbus-proxy packages.

    For the detailed security status of xdg-dbus-proxy please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/xdg-dbus-proxy

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dla-4542 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-4542-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/               Emilio Pozuelo Monfort     April 21, 2026                                https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : xdg-dbus-proxy     Version        : 0.1.2-2+deb11u1     CVE ID         : CVE-2026-34080     Debian Bug     : 1132939

    It was discovered that incorrect parsing of policy rules in the     xdg-dbus-proxy (a filtering proxy for D-Bus connections) allowed the     bypass of eavesdrop restrictions, which could result in information     disclosure.

    For Debian 11 bullseye, this problem has been fixed in version     0.1.2-2+deb11u1.

    We recommend that you upgrade your xdg-dbus-proxy packages.

    For the detailed security status of xdg-dbus-proxy please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/xdg-dbus-proxy

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 43 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-9518314403 advisory.

    Update the package, including fix for     [CVE-2026-34080](https://access.redhat.com/security/cve/cve-2026-34080). See also: [upstream security     advisory](https://github.com/flatpak/xdg-dbus-proxy/security/advisories/GHSA-vjp5-hjfm-7677)

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 13 host has packages installed that are affected by a vulnerability as referenced in the dsa-6209 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6209-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     April 13, 2026                        https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : xdg-dbus-proxy     CVE ID         : CVE-2026-34080

    It was discovered that incorrect parsing of policy rules in the     xdg-dbus-proxy (a filtering proxy for D-Bus connections) allowed the     bypass of eavesdrop restrictions, which could result in information     disclosure.

    For the stable distribution (trixie), this problem has been fixed in     version 0.1.6-1+deb13u1.

    We recommend that you upgrade your xdg-dbus-proxy packages.

    For the detailed security status of xdg-dbus-proxy please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/xdg-dbus-proxy

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 host has packages installed that are affected by a vulnerability as referenced in the USN-8167-1 advisory.

    It was discovered that xdg-dbus-proxy incorrectly handled eavesdropping in policy rules. A local attacker     could possibly use this issue to intercept certain D-Bus messages.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2026-34080)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
310208	Fedora 44 : xdg-dbus-proxy (2026-205fd328d2)	Nessus	Fedora Local Security Checks	medium
309200	Debian dsa-6224 : xdg-dbus-proxy - security update	Nessus	Debian Local Security Checks	medium
307902	Debian dla-4542 : xdg-dbus-proxy - security update	Nessus	Debian Local Security Checks	medium
307654	Fedora 43 : xdg-dbus-proxy (2026-9518314403)	Nessus	Fedora Local Security Checks	medium
307631	Debian dsa-6209 : xdg-dbus-proxy - security update	Nessus	Debian Local Security Checks	medium
306260	Ubuntu 22.04 LTS / 24.04 LTS / 25.10 : xdg-dbus-proxy vulnerability (USN-8167-1)	Nessus	Ubuntu Local Security Checks	medium
305264	Linux Distros Unpatched Vulnerability : CVE-2026-34080	Nessus	Misc.	medium

Detections

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CVE-2026-34080

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