CVE-2026-55888

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

No CVSS.

References

Link	Resource
https://github.com/flatpak/xdg-desktop-portal/releases/tag/1.22.1
https://github.com/flatpak/xdg-desktop-portal/security/advisories/GHSA-cm83-2936-gxjm

Configurations

No configuration.

History

23 Oct 2026, 13:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-23 13:17

Updated : 2026-10-30 15:16

NVD link : CVE-2026-55888

Mitre link : CVE-2026-55888

CVE.ORG link : CVE-2026-55888

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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