CVE-2026-61550

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Source

https://cve.org/CVERecord?id=CVE-2026-61550

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-61550.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-61550

Aliases

GHSA-vj39-ww8j-vvx5

Downstream

DEBIAN-CVE-2026-61550

UBUNTU-CVE-2026-61550

Published

2026-09-18T17:21:18Z

Modified

2026-09-20T11:46:51Z

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

Summary

Icinga 2: Improper access control for JSON-RPC update certificate messages

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.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61550.json"
}

References

Affected packages

Git / github.com/icinga/icinga2

Affected ranges

Type

GIT

Repo

https://github.com/icinga/icinga2

Events

Introduced

06ed955cb5bcc51179f92fbbd20303428208827b

Introduced

f87948081fc2386fc7a30eb12ab01cb907dbe3fb

Introduced

5855790474c50904efd0c9e31968c04938960a01

Fixed

75b2d7a1c9eacb58e3e3025a6e5f4f573f922d23

Fixed

b4ec974518c9e5f5ca861169442ac3780e675767

Fixed

cfdf63b6331c73fecb2de433022e950cf5184d02

Fixed

4b7fb3405f4616a24b2b55e20f603a56b7dd6ad0

Fixed

6c2e0db3819f859910a4ae265461cb51b1d2039c

Fixed

a6f7cc7a4ef8beed023b24416106822d6940c4c0

Fixed

d37b0cfd7d9595ae2f02fadb3d724c98d8620f81

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "2.8"
        },
        {
            "fixed": "2.14.9"
        },
        {
            "introduced": "2.15.0"
        },
        {
            "fixed": "2.15.4"
        },
        {
            "introduced": "2.16.0"
        },
        {
            "fixed": "2.16.2"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v2.*

v2.15.0

v2.15.3

v2.16.0

v2.16.1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-61550.json"