CVE-2026-40354
Publication date 11 April 2026
Last updated 27 May 2026
Ubuntu priority
Description
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 g_file_trash.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| xdg-desktop-portal | 26.04 LTS resolute |
Not affected
|
| 25.10 questing |
Fixed 1.20.3+ds-1ubuntu1.1
|
|
| 24.04 LTS noble |
Fixed 1.18.4-1ubuntu2.24.04.2
|
|
| 22.04 LTS jammy | Ignored changes too intrusive | |
| 20.04 LTS focal | Ignored changes too intrusive | |
| 18.04 LTS bionic | Ignored changes too intrusive | |
| 16.04 LTS xenial | Ignored end of ESM support, was ignored [changes too intrusive] |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
2.9 · Low
|
| Attack vector | Local |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | Low |
| Vector | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L |
References
Related Ubuntu Security Notices (USN)
- USN-8287-1
- XDG Desktop Portal vulnerability
- 20 May 2026
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-40354
- https://github.com/flatpak/xdg-desktop-portal/security/advisories/GHSA-rqr9-jwwf-wxgj
- https://github.com/flatpak/xdg-desktop-portal/releases/tag/1.20.4
- https://github.com/flatpak/xdg-desktop-portal/releases/tag/1.21.1
- https://www.openwall.com/lists/oss-security/2026/04/10/14