USN-8287-2: XDG Desktop Portal regression
Ubuntu fixes an incomplete XDG Desktop Portal patch for CVE-2026-40354 that broke file trashing.
Ubuntu USN-8287-2 says the earlier fix for CVE-2026-40354 in XDG Desktop Portal was incomplete and introduced a regression when trashing files. This update corrects that problem and supplies the corresponding package for Ubuntu 26.04 LTS. The original flaw let a local attacker possibly delete arbitrary files on the host filesystem through a symlink while trashing files. The notice does not report exploitation in the wild.
- USN-8287-1 left CVE-2026-40354 only partly fixed.
- The bad fix regressed trashing files on Ubuntu 26.04 LTS.
- A local symlink could delete arbitrary host files.
- The notice does not report active exploitation.
- CVEs
- CVE-2026-40354
- Vendors
- Canonical
- Products
- xdg-desktop-portalUbuntu
- Organizations
- Canonical
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2026-40354 | Flatpak xdg-desktop-portal before 1.20.4 and 1.21.x before 1.21.1 allows any Flatpak app to trash any file in the host context via a symlink attack on… | 6.3 | <1% |
From the original article
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.
ubuntu.com
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