PatchTheCVECVE-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
CVE-2026-40354 is a low-severity flaw (CVSS 2.9) affecting xdg-desktop-portal. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 2.9 (Low) |
| Attack vector | Local |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.1% (top 98%) |
| CISA exploited list | No |
| Weakness | CWE-61 |
| Published | 2026-04-11 |
| Last modified | 2026-10-26 |
Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-40354?
xdg-desktop-portal: upgrade to 1.20.4. Exact commands for each OS are on this page.
Is CVE-2026-40354 being exploited?
CVE-2026-40354 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-40354 affect?
CVE-2026-40354 affects xdg-desktop-portal. Severity is low (CVSS 2.9). 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.
How urgent is CVE-2026-40354?
Priority 11/100. No elevated risk signals yet.