CVE-2026-34080 · cross-distro fix matrix

CVE-2026-34080: USN-8167-1 fixed a vulnerability in xdg-dbus-proxy. This update

Affects 4 Linux releases across 5 (distro × package) combinations. First disclosed: 2026-05-26.

Fix per ecosystem

Each block below is a distro release where CVE-2026-34080 has a known fix. Run the listed command on that distro to remediate.

Ubuntu focal

Source: Ubuntu USN

xdg-dbus-proxy→ fixed in0.1.2-1ubuntu0.1~esm1USN-8167-2
```
sudo apt-get install --only-upgrade -y xdg-dbus-proxy
```
xdg-dbus-proxy-tests→ fixed in0.1.2-1ubuntu0.1~esm1USN-8167-2
```
sudo apt-get install --only-upgrade -y xdg-dbus-proxy-tests
```

Debian bullseye

Source: Debian Security Tracker

xdg-dbus-proxy→ fixed in0.1.2-2+deb11u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y xdg-dbus-proxy
```

Debian bookworm

Source: Debian Security Tracker

xdg-dbus-proxy→ fixed in0.1.4-3+deb12u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y xdg-dbus-proxy
```

Debian trixie

Source: Debian Security Tracker

xdg-dbus-proxy→ fixed in0.1.6-1+deb13u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y xdg-dbus-proxy
```

Are YOU affected by CVE-2026-34080?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

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