Live › vulnerability › CVE-2026-55888
Go to dashboardA sandboxed Linux application can call the FileChooser.SaveFiles portal method with crafted filenames to create files at arbitrary paths the user can write to. Because the names are not validated, the sandbox boundary for file creation is bypassed.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.
No product ranges from the sources yet.
Run xdg-desktop-portal --version and check whether it is below 1.22.1.
Upgrade xdg-desktop-portal to 1.22.1 or later.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
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.
This page as .md · .json · in your agent: get_signal("CVE-2026-55888")
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