UBUNTU-CVE-2026-48804

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Source
https://ubuntu.com/security/CVE-2026-48804
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48804.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-48804
Upstream
Published
2026-08-13T00:00:00Z
Modified
2026-08-13T19:30:18.440998947Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

python-socketio is a Python implementation of the Socket.IO realtime client and server. The python-socketio server stores binary EVENT and ACK messages in memory while it waits to receive their binary attachments. Once all the attachments are received, these messages are then processed. Prior to version 5.16.4, an attacker can submit a binary message and intentionally omit sending one or more of its attachments to cause the message along with the partial list of received attachments to stay in memory for a long time. Version 5.16.4 takes the following measures to address this issue: Binary packets are only accepted from authenticated clients and, when a client disconnects, the server checks if there is a partial binary message being held for the client and deletes it.

References

Affected packages

Ubuntu:20.04:LTS / python-socketio

Package

Name
python-socketio
Purl
pkg:deb/ubuntu/python-socketio?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.4.0-1
4.4.0-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.4.0-2",
            "binary_name": "python3-socketio"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48804.json"

Ubuntu:22.04:LTS / python-socketio

Package

Name
python-socketio
Purl
pkg:deb/ubuntu/python-socketio?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

5.*
5.0.3-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "5.0.3-2",
            "binary_name": "python3-socketio"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48804.json"

Ubuntu:24.04:LTS / python-socketio

Package

Name
python-socketio
Purl
pkg:deb/ubuntu/python-socketio?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

5.*
5.7.2-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "5.7.2-2",
            "binary_name": "python3-socketio"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48804.json"

Ubuntu:26.04:LTS / python-socketio

Package

Name
python-socketio
Purl
pkg:deb/ubuntu/python-socketio?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

5.*
5.13.0-1
5.16.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "5.16.0-1",
            "binary_name": "python3-socketio"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48804.json"