Description
XDG Desktop Portal is a desktop integration portal. Prior to version 1.22.1, malicious sandboxed applications can use the FileTransfer.RetrieveFiles method to redirect drag-and-drop and copy-paste data targeted at other applications to itself. Some portals generate tokens which provide access to resources. The sharing of the token transfers access to the resource and is supposed to happen out of band. The tokens were generated with g_random_int or g_uuid_string_random, both of which use GLib's GRand based on the Mersenne Twister PRNG which created a stream of reproducible random numbers. By generating enough tokens, the state of the GRand can be recover and with it, the next tokens can be predictedinsufin. This issue has been patched in version 1.22.1.
Published: 2026-10-23
Score: 8.3 High
EPSS: n/a
KEV: No
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Remediation

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History

Fri, 23 Oct 2026 12:45:00 +0000

Type Values Removed Values Added
Description XDG Desktop Portal is a desktop integration portal. Prior to version 1.22.1, malicious sandboxed applications can use the FileTransfer.RetrieveFiles method to redirect drag-and-drop and copy-paste data targeted at other applications to itself. Some portals generate tokens which provide access to resources. The sharing of the token transfers access to the resource and is supposed to happen out of band. The tokens were generated with g_random_int or g_uuid_string_random, both of which use GLib's GRand based on the Mersenne Twister PRNG which created a stream of reproducible random numbers. By generating enough tokens, the state of the GRand can be recover and with it, the next tokens can be predictedinsufin. This issue has been patched in version 1.22.1.
Title XDG Desktop Portal: Drag-and-drop and copy-paste theft via predictable FileTransfer key
Weaknesses CWE-330
CWE-337
References
Metrics cvssV4_0

{'score': 8.3, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-23T12:35:05.502Z

Reserved: 2026-06-17T16:59:42.760Z

Link: CVE-2026-55889

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-23T13:17:10.230

Modified: 2026-10-23T13:17:10.230

Link: CVE-2026-55889

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T13:30:07Z

Weaknesses
  • CWE-330

    Use of Insufficiently Random Values

  • CWE-337

    Predictable Seed in Pseudo-Random Number Generator (PRNG)