CVE-2026-55889

Published: Ott 23, 2026 Last Modified: Ott 23, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 8,3
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A

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.

330

Use of Insufficiently Random Values

Stable
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Other Access Control
Potential Impacts:
Other Bypass Protection Mechanism Gain Privileges Or Assume Identity
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: High
View CWE Details
337

Predictable Seed in Pseudo-Random Number Generator (PRNG)

Draft
Abstraction: Variant Structure: Simple
Common Consequences
Security Scopes Affected:
Other
Potential Impacts:
Varies By Context
Applicable Platforms
All platforms may be affected
View CWE Details
https://github.com/flatpak/xdg-desktop-portal/releases/tag/…
https://github.com/flatpak/xdg-desktop-portal/releases/tag/1.22.1
https://github.com/flatpak/xdg-desktop-portal/security/advi…
https://github.com/flatpak/xdg-desktop-portal/security/advisories/GHSA-c5cf-79w…