CVE-2026-55889

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Source
https://cve.org/CVERecord?id=CVE-2026-55889
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55889.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-55889
Aliases
  • GHSA-c5cf-79w8-pvfh
Downstream
Related
Published
2026-10-23T12:35:05Z
Modified
2026-11-05T13:27:13Z
Severity
  • 8.3 (High) CVSS_V4 - 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 CVSS Calculator
Summary
XDG Desktop Portal: Drag-and-drop and copy-paste theft via predictable FileTransfer key
Details

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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-330",
        "CWE-337"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55889.json"
}
References

Affected packages

Git / github.com/flatpak/xdg-desktop-portal

Affected ranges

Type
GIT
Repo
https://github.com/flatpak/xdg-desktop-portal
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
1d20fadc304f6601452b5db65ed91197dba77041
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "1.22.1"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "original_tag": "1.22.1",
            "range": [
                {
                    "fixed": "1d20fadc304f6601452b5db65ed91197dba77041"
                }
            ],
            "source": "REFERENCES_TAG"
        },
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "1.22.1"
                }
            ],
            "source": "DESCRIPTION"
        }
    ]
}

Affected versions

0.*
0.1
0.10
0.11
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
0.99
1.*
1.0
1.0.1
1.0.2
1.0.3
1.1.0
1.1.1
1.10.0
1.12.0
1.12.1
1.14.0
1.14.1
1.15.0
1.16.0
1.17.0
1.17.1
1.17.2
1.18.0
1.18.1
1.19.0
1.19.1
1.19.2
1.19.3
1.19.4
1.2.0
1.20.0
1.20.1
1.21.0
1.21.1
1.21.2
1.22.0
1.4.0
1.4.1
1.4.2
1.5.0
1.5.1
1.5.2
1.5.3
1.5.4
1.6.0
1.7.0
1.7.1
1.7.2
1.8.0
1.8.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55889.json"