Directory Traversal Affecting xdg-desktop-portal package, versions <1.22.1+ds-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.38% (33rd percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-XDGDESKTOPPORTAL-21694091
  • published24 Oct 2026
  • disclosed23 Oct 2026

Introduced: 23 Oct 2026

NewCVE-2026-55888  (opens in a new tab)
CWE-22  (opens in a new tab)

How to fix?

Upgrade Debian:unstable xdg-desktop-portal to version 1.22.1+ds-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xdg-desktop-portal package and not the xdg-desktop-portal package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

XDG Desktop Portal is a desktop integration portal. Prior to version 1.22.1, 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). 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. This issue has been patched in version 1.22.1.

CVSS Base Scores

version 3.1