{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-61550",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-07-10T16:48:39.922Z",
        "datePublished": "2026-09-18T17:21:18.217Z",
        "dateUpdated": "2026-09-21T20:49:08.713Z"
    },
    "containers": {
        "cna": {
            "title": "Icinga 2: Improper access control for JSON-RPC update certificate messages",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-862",
                            "lang": "en",
                            "description": "CWE-862: Missing Authorization",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 9.8,
                        "baseSeverity": "CRITICAL",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/Icinga/icinga2/security/advisories/GHSA-vj39-ww8j-vvx5",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/Icinga/icinga2/security/advisories/GHSA-vj39-ww8j-vvx5"
                },
                {
                    "name": "https://github.com/Icinga/icinga2/pull/10907",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/Icinga/icinga2/pull/10907"
                },
                {
                    "name": "https://github.com/Icinga/icinga2/commit/4b7fb3405f4616a24b2b55e20f603a56b7dd6ad0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/Icinga/icinga2/commit/4b7fb3405f4616a24b2b55e20f603a56b7dd6ad0"
                },
                {
                    "name": "https://github.com/Icinga/icinga2/commit/6c2e0db3819f859910a4ae265461cb51b1d2039c",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/Icinga/icinga2/commit/6c2e0db3819f859910a4ae265461cb51b1d2039c"
                },
                {
                    "name": "https://github.com/Icinga/icinga2/commit/a6f7cc7a4ef8beed023b24416106822d6940c4c0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/Icinga/icinga2/commit/a6f7cc7a4ef8beed023b24416106822d6940c4c0"
                },
                {
                    "name": "https://github.com/Icinga/icinga2/commit/d37b0cfd7d9595ae2f02fadb3d724c98d8620f81",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/Icinga/icinga2/commit/d37b0cfd7d9595ae2f02fadb3d724c98d8620f81"
                },
                {
                    "name": "https://github.com/Icinga/icinga2/releases/tag/v2.14.9",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/Icinga/icinga2/releases/tag/v2.14.9"
                },
                {
                    "name": "https://github.com/Icinga/icinga2/releases/tag/v2.15.4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/Icinga/icinga2/releases/tag/v2.15.4"
                },
                {
                    "name": "https://github.com/Icinga/icinga2/releases/tag/v2.16.2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/Icinga/icinga2/releases/tag/v2.16.2"
                },
                {
                    "name": "https://icinga.com/blog/icinga2-security-release-v2-16-2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://icinga.com/blog/icinga2-security-release-v2-16-2"
                }
            ],
            "affected": [
                {
                    "vendor": "Icinga",
                    "product": "icinga2",
                    "versions": [
                        {
                            "version": ">= 2.8, < 2.14.9",
                            "status": "affected"
                        },
                        {
                            "version": ">= 2.15.0, < 2.15.4",
                            "status": "affected"
                        },
                        {
                            "version": ">= 2.16.0, < 2.16.2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-09-18T17:21:18.217Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "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."
                }
            ],
            "source": {
                "advisory": "GHSA-vj39-ww8j-vvx5",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-21T15:29:22.834072Z",
                                "id": "CVE-2026-61550",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-09-21T20:49:08.713Z"
                }
            }
        ]
    }
}