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GHSA-cm83-2936-gxjm on CTRL-OS 26.05

Aliases: GHSA-cm83-2936-gxjm

Packages: xdg-desktop-portal

Status: Plausible

Advisory Information

Impact

Malicious sandboxed applications can use the FileChooser.SaveFiles method to gain arbitrary file access to non-existing files on the host (limited to files the user has access to).

Description

The FileChooser.SaveFiles method takes optional filenames which get appended to the selected directory by backends. The backends are supposed to check that the file does not exist yet. The filenames are not validated by the frontend and also not by common backends.

Patches

The issue has been patched in version 1.22.1.

Mitigations

No known mitigation other than updating.

Credits

Reported by WonYun Kang (kyun0)

Updates

2026-07-10 18:44 CEST

Metadata changes:

  • Status for package xdg-desktop-portal: “Plausible”

(Amended on: 2026-07-10 18:45 CEST)

2026-07-07 22:45 CEST

Metadata changes:

  • Status for package xdg-desktop-portal: “New”