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.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
High
Difficult to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
Low
Partial disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 4
https://github.com/flatpak/xdg-desktop-portal/releases/tag/1.20.4
cve@mitre.org
https://github.com/flatpak/xdg-desktop-portal/releases/tag/1.21.1
cve@mitre.org
https://github.com/flatpak/xdg-desktop-portal/security/advisories/GHSA-rqr9-jww…
cve@mitre.org
https://www.openwall.com/lists/oss-security/2026/04/10/14
cve@mitre.org