{"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": "2026-09-18T17:21:18.217Z"}, "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"}}}}

{}

{"affected": [{"affectedData": [{"product": "icinga2", "vendor": "Icinga", "versions": [{"status": "affected", "version": ">= 2.8, < 2.14.9"}, {"status": "affected", "version": ">= 2.15.0, < 2.15.4"}, {"status": "affected", "version": ">= 2.16.0, < 2.16.2"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "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."}], "id": "CVE-2026-61550", "lastModified": "2026-09-18T18:17:08.217", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-09-18T18:17:08.217", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/Icinga/icinga2/commit/4b7fb3405f4616a24b2b55e20f603a56b7dd6ad0"}, {"source": "security-advisories@github.com", "url": "https://github.com/Icinga/icinga2/commit/6c2e0db3819f859910a4ae265461cb51b1d2039c"}, {"source": "security-advisories@github.com", "url": "https://github.com/Icinga/icinga2/commit/a6f7cc7a4ef8beed023b24416106822d6940c4c0"}, {"source": "security-advisories@github.com", "url": "https://github.com/Icinga/icinga2/commit/d37b0cfd7d9595ae2f02fadb3d724c98d8620f81"}, {"source": "security-advisories@github.com", "url": "https://github.com/Icinga/icinga2/pull/10907"}, {"source": "security-advisories@github.com", "url": "https://github.com/Icinga/icinga2/releases/tag/v2.14.9"}, {"source": "security-advisories@github.com", "url": "https://github.com/Icinga/icinga2/releases/tag/v2.15.4"}, {"source": "security-advisories@github.com", "url": "https://github.com/Icinga/icinga2/releases/tag/v2.16.2"}, {"source": "security-advisories@github.com", "url": "https://github.com/Icinga/icinga2/security/advisories/GHSA-vj39-ww8j-vvx5"}, {"source": "security-advisories@github.com", "url": "https://icinga.com/blog/icinga2-security-release-v2-16-2"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}