UBUNTU-CVE-2026-53450

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Source
https://ubuntu.com/security/CVE-2026-53450
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53450.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-53450
Upstream
Published
2026-07-13T00:00:00Z
Modified
2026-07-13T16:15:25.587588211Z
Severity
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.13.0, coturn rejects loopback peers by default unless allow-loopback-peers is enabled, but the default loopback guard can be bypassed by using the IPv4-mapped IPv6 peer address ::ffff:127.0.0.1 in a TURN XOR-PEER-ADDRESS attribute. ioaaddrisloopback checks for the literal IPv6 loopback shape before IPv4-mapped IPv6 handling, so goodpeer_addr does not apply the default loopback rejection and an authenticated TURN client can expose services bound only to localhost on the coturn host through TURN relay traffic. This issue is fixed in version 4.13.0.

References

Affected packages

Ubuntu:16.04:LTS
coturn

Package

Name
coturn
Purl
pkg:deb/ubuntu/coturn?arch=source&distro=xenial

Affected ranges

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

Affected versions

4.*
4.4.5.4-2
4.5.0.2-3
4.5.0.3-1
4.5.0.3-1build1
4.5.0.3-1ubuntu0.2
4.5.0.3-1ubuntu0.3
4.5.0.3-1ubuntu0.4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "coturn",
            "binary_version": "4.5.0.3-1ubuntu0.4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53450.json"
Ubuntu:18.04:LTS
coturn

Package

Name
coturn
Purl
pkg:deb/ubuntu/coturn?arch=source&distro=bionic

Affected ranges

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

Affected versions

4.*
4.5.0.6-1ubuntu2
4.5.0.7-1ubuntu1
4.5.0.7-1ubuntu2
4.5.0.7-1ubuntu2.18.04.1
4.5.0.7-1ubuntu2.18.04.2
4.5.0.7-1ubuntu2.18.04.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "coturn",
            "binary_version": "4.5.0.7-1ubuntu2.18.04.3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53450.json"
Ubuntu:20.04:LTS
coturn

Package

Name
coturn
Purl
pkg:deb/ubuntu/coturn?arch=source&distro=focal

Affected ranges

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

Affected versions

4.*
4.5.1.1-1.1build1
4.5.1.1-1.1build2
4.5.1.1-1.1ubuntu0.20.04.1
4.5.1.1-1.1ubuntu0.20.04.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "coturn",
            "binary_version": "4.5.1.1-1.1ubuntu0.20.04.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53450.json"
Ubuntu:22.04:LTS
coturn

Package

Name
coturn
Purl
pkg:deb/ubuntu/coturn?arch=source&distro=jammy

Affected ranges

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

Affected versions

4.*
4.5.2-3
4.5.2-3.1~ubuntu22.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "coturn",
            "binary_version": "4.5.2-3.1~ubuntu22.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53450.json"
Ubuntu:24.04:LTS
coturn

Package

Name
coturn
Purl
pkg:deb/ubuntu/coturn?arch=source&distro=noble

Affected ranges

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

Affected versions

4.*
4.6.1-1build1
4.6.1-1build2
4.6.1-1build3
4.6.1-1build4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "coturn",
            "binary_version": "4.6.1-1build4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53450.json"
Ubuntu:26.04:LTS
coturn

Package

Name
coturn
Purl
pkg:deb/ubuntu/coturn?arch=source&distro=resolute

Affected ranges

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

Affected versions

4.*
4.6.1-2build1
4.6.1-2build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "coturn",
            "binary_version": "4.6.1-2build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53450.json"