CVE-2026-40354 PUBLISHED

Assigner: mitre
Reserved: 11.04.2026 Published: 11.04.2026 Updated: 11.04.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS Score: 2.9

Attack Vector	Local	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	Flatpak
Product	xdg-desktop-portal
Versions	Default: unaffected affected from 0 to 1.20.4 (excl.) affected from 1.21.0 to 1.21.1 (excl.)

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

Problem Types

CWE-61 UNIX Symbolic Link (Symlink) Following CWE