UBUNTU-CVE-2026-61550

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Source
https://ubuntu.com/security/CVE-2026-61550
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61550.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-61550
Upstream
Published
2026-09-18T18:17:00Z
Modified
2026-09-24T02:00:34Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Icinga 2 is an open source monitoring system. From 2.8 until 2.14.9, 2.15.4, and 2.16.2, certificate update JSON-RPC message handling does not validate that the sender is a trusted endpoint. An unauthenticated network attacker able to connect to TCP port 5665 can replace the node certificate and trusted CA certificate, impersonate a trusted node, and take control of the node. This issue is fixed in versions 2.14.9, 2.15.4, and 2.16.2.

References

Affected packages

Ubuntu:16.04:LTS
icinga2

Package

Name
icinga2
Purl
pkg:deb/ubuntu/icinga2?arch=source&distro=xenial

Affected ranges

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

Affected versions

2.*
2.3.8-1build1
2.3.11-1
2.4.0-1
2.4.1-1
2.4.1-2
2.4.1-2ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "icinga2",
            "binary_version": "2.4.1-2ubuntu1"
        },
        {
            "binary_name": "icinga2-bin",
            "binary_version": "2.4.1-2ubuntu1"
        },
        {
            "binary_name": "icinga2-classicui",
            "binary_version": "2.4.1-2ubuntu1"
        },
        {
            "binary_name": "icinga2-common",
            "binary_version": "2.4.1-2ubuntu1"
        },
        {
            "binary_name": "icinga2-ido-mysql",
            "binary_version": "2.4.1-2ubuntu1"
        },
        {
            "binary_name": "icinga2-ido-pgsql",
            "binary_version": "2.4.1-2ubuntu1"
        },
        {
            "binary_name": "icinga2-studio",
            "binary_version": "2.4.1-2ubuntu1"
        },
        {
            "binary_name": "libicinga2",
            "binary_version": "2.4.1-2ubuntu1"
        },
        {
            "binary_name": "vim-icinga2",
            "binary_version": "2.4.1-2ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61550.json"
Ubuntu:18.04:LTS
icinga2

Package

Name
icinga2
Purl
pkg:deb/ubuntu/icinga2?arch=source&distro=bionic

Affected ranges

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

Affected versions

2.*
2.7.0-1
2.8.1-0ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "icinga2",
            "binary_version": "2.8.1-0ubuntu2"
        },
        {
            "binary_name": "icinga2-bin",
            "binary_version": "2.8.1-0ubuntu2"
        },
        {
            "binary_name": "icinga2-classicui",
            "binary_version": "2.8.1-0ubuntu2"
        },
        {
            "binary_name": "icinga2-common",
            "binary_version": "2.8.1-0ubuntu2"
        },
        {
            "binary_name": "icinga2-ido-mysql",
            "binary_version": "2.8.1-0ubuntu2"
        },
        {
            "binary_name": "icinga2-ido-pgsql",
            "binary_version": "2.8.1-0ubuntu2"
        },
        {
            "binary_name": "icinga2-studio",
            "binary_version": "2.8.1-0ubuntu2"
        },
        {
            "binary_name": "libicinga2",
            "binary_version": "2.8.1-0ubuntu2"
        },
        {
            "binary_name": "vim-icinga2",
            "binary_version": "2.8.1-0ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61550.json"
Ubuntu:20.04:LTS
icinga2

Package

Name
icinga2
Purl
pkg:deb/ubuntu/icinga2?arch=source&distro=focal

Affected ranges

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

Affected versions

2.*
2.10.5-1build1
2.11.2-1
2.11.2-1ubuntu1
2.11.2-1ubuntu2
2.11.2-1ubuntu3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "icinga2",
            "binary_version": "2.11.2-1ubuntu3"
        },
        {
            "binary_name": "icinga2-bin",
            "binary_version": "2.11.2-1ubuntu3"
        },
        {
            "binary_name": "icinga2-common",
            "binary_version": "2.11.2-1ubuntu3"
        },
        {
            "binary_name": "icinga2-ido-mysql",
            "binary_version": "2.11.2-1ubuntu3"
        },
        {
            "binary_name": "icinga2-ido-pgsql",
            "binary_version": "2.11.2-1ubuntu3"
        },
        {
            "binary_name": "vim-icinga2",
            "binary_version": "2.11.2-1ubuntu3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61550.json"
Ubuntu:22.04:LTS
icinga2

Package

Name
icinga2
Purl
pkg:deb/ubuntu/icinga2?arch=source&distro=jammy

Affected ranges

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

Affected versions

2.*
2.12.3-1
2.13.1-1
2.13.2-1
2.13.2-1build1
2.13.2-1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "icinga2",
            "binary_version": "2.13.2-1build2"
        },
        {
            "binary_name": "icinga2-bin",
            "binary_version": "2.13.2-1build2"
        },
        {
            "binary_name": "icinga2-common",
            "binary_version": "2.13.2-1build2"
        },
        {
            "binary_name": "icinga2-ido-mysql",
            "binary_version": "2.13.2-1build2"
        },
        {
            "binary_name": "icinga2-ido-pgsql",
            "binary_version": "2.13.2-1build2"
        },
        {
            "binary_name": "vim-icinga2",
            "binary_version": "2.13.2-1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61550.json"
Ubuntu:24.04:LTS
icinga2

Package

Name
icinga2
Purl
pkg:deb/ubuntu/icinga2?arch=source&distro=noble

Affected ranges

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

Affected versions

2.*
2.13.8-1
2.14.1-1
2.14.2-1
2.14.2-1build1
2.14.2-1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "icinga2",
            "binary_version": "2.14.2-1build2"
        },
        {
            "binary_name": "icinga2-bin",
            "binary_version": "2.14.2-1build2"
        },
        {
            "binary_name": "icinga2-common",
            "binary_version": "2.14.2-1build2"
        },
        {
            "binary_name": "icinga2-ido-mysql",
            "binary_version": "2.14.2-1build2"
        },
        {
            "binary_name": "icinga2-ido-pgsql",
            "binary_version": "2.14.2-1build2"
        },
        {
            "binary_name": "vim-icinga2",
            "binary_version": "2.14.2-1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61550.json"
Ubuntu:26.04:LTS
icinga2

Package

Name
icinga2
Purl
pkg:deb/ubuntu/icinga2?arch=source&distro=resolute

Affected ranges

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

Affected versions

2.*
2.15.0-1
2.15.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "icinga2",
            "binary_version": "2.15.1-1"
        },
        {
            "binary_name": "icinga2-bin",
            "binary_version": "2.15.1-1"
        },
        {
            "binary_name": "icinga2-common",
            "binary_version": "2.15.1-1"
        },
        {
            "binary_name": "icinga2-ido-mysql",
            "binary_version": "2.15.1-1"
        },
        {
            "binary_name": "icinga2-ido-pgsql",
            "binary_version": "2.15.1-1"
        },
        {
            "binary_name": "vim-icinga2",
            "binary_version": "2.15.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61550.json"