USN-8287-2: XDG Desktop Portal regression

Publication date

23 September 2026

Overview

USN-8287-1 introduced a regression in XDG Desktop Portal


Packages

  • xdg-desktop-portal - A portal frontend service for Flatpak and other desktop containment frameworks

Details

USN-8287-1 fixed a vulnerability in XDG Desktop Portal. Unfortunately the
fix for CVE-2026-40354 was incomplete and introduced a regression when
trashing files. This update fixes the problem and provides the
corresponding update for Ubuntu 26.04 LTS.

We apologize for the inconvenience.

Original advisory details:

It was discovered that XDG Desktop Portal incorrectly handled
trashing files. A local attacker could possibly use this issue to
delete arbitrary files on the host file system via a symlink attack.

USN-8287-1 fixed a vulnerability in XDG Desktop Portal. Unfortunately the
fix for CVE-2026-40354 was incomplete and introduced a regression when
trashing files. This update fixes the problem and provides the
corresponding update for Ubuntu 26.04 LTS.

We apologize for the inconvenience.

Original advisory details:

It was discovered that XDG Desktop Portal incorrectly handled
trashing files. A local attacker could possibly use this issue to
delete arbitrary files on the host file system via a symlink attack.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:


Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.


Have additional questions?

Talk to a member of the team ›