CVE-2026-40354

LOW

Flatpak xdg-desktop-portal <1.20.4 - Privilege Escalation

Title source: llm

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.

References (4)

Core 4

Core References

https://github.com/flatpak/xdg-desktop-portal/releases/tag/1.21.1

https://github.com/flatpak/xdg-desktop-portal/releases/tag/1.20.4

https://www.openwall.com/lists/oss-security/2026/04/10/14

https://github.com/flatpak/xdg-desktop-portal/security/advisories/GHSA-rqr9-jwwf-wxgj

Scores

CVSS v3 2.9

EPSS 0.0013

EPSS Percentile 2.7%

Attack Vector LOCAL

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-61

Status published

Products (4)

flatpak/xdg-desktop-portal 1.21.0

Flatpak/xdg-desktop-portal < 1.20.4

flatpak/xdg-desktop-portal < 1.20.4

Flatpak/xdg-desktop-portal 1.21.0 - 1.21.1

Published Apr 11, 2026

Tracked Since Apr 11, 2026