CVE-2026-403542.9LowCWE-61

CVE-2026-40354: Flatpak xdg-desktop-portal vulnerability

Flatpak · xdg-desktop-portal

Vendor fix available · Affected: Flatpak xdg-desktop-portal · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.1%probability of exploitation in the next 30 days

2nd percentile

050100

Higher than 2% of scored CVEs

2.9LowCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

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.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

Flatpak · xdg-desktop-portalbefore 1.20.4; from 1.21.0 before 1.21.1

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: UNIX Symbolic Link (Symlink) Following · File and Path Handling
Vendor: Flatpak
Published: April 2026
Band: Unlikely (under 1%), April 2026

CoverageNo articles yet

No CyberSIXT article names CVE-2026-40354 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.