{"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"}}]}}