CVE-2026-40354

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.

Affected Platforms

Weakness Type

CWE-61

References

• 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://github.com/flatpak/xdg-desktop-portal/security/advisories/GHSA-rqr9-jwwf…
• https://www.openwall.com/lists/oss-security/2026/04/10/14