CVE-2026-40354

flatpak: xdg-desktop-portal: Flatpak xdg-desktop-portal: File deletion via symlink attack

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Severity

Moderate

Red Hat Product Security

6.1

CVSS 3.1

Review impact separately from score.

Published · April 11, 2026

Updated · July 3, 2026

Description

A flaw was found in Flatpak xdg-desktop-portal. A malicious Flatpak application can exploit this vulnerability by performing a symbolic link (symlink) attack on the g_file_trash function. This allows the Flatpak application to delete any file on the host system, leading to a denial of service.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 6.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

CWE-59 · Improper Link Resolution Before File Access ('Link Following')