{"id":"CVE-2026-61551","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-61551","generatedAt":"2026-10-28T02:57:36.605Z","title":"The affected JSON parsing paths are reachable by unauthenticated network clients through the Icinga 2 service on TCP port 5665, allowing a remote attacker to crash the process, while possible code execution has not been demonstrated.","description":"Icinga 2 is an open source monitoring system. Prior to 2.14.9, 2.15.4, and 2.16.2, parsing deeply nested JSON can exhaust the call stack because nesting depth is not bounded. The affected JSON parsing paths are reachable by unauthenticated network clients through the Icinga 2 service on TCP port 5665, allowing a remote attacker to crash the process, while possible code execution has not been demonstrated. This issue is fixed in versions 2.14.9, 2.15.4, and 2.16.2.","published":"2026-09-18T18:17:08.000Z","lastModified":"2026-09-24T21:17:43.000Z","status":"Awaiting Analysis","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":8.6,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"},"cwe":["CWE-674"],"affected":[],"epss":{"score":0.00941,"percentile":0.60701,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.94%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/Icinga/icinga2/commit/391504eaa9ed9aee81f84008c57ec821974b74ee","source":"security-advisories@github.com"},{"url":"https://github.com/Icinga/icinga2/commit/3d9166ff52ff1a64a286c39af57957d63442c137","source":"security-advisories@github.com"},{"url":"https://github.com/Icinga/icinga2/commit/4964d2444ca5c4fae9036054554e1c6e0025fb89","source":"security-advisories@github.com"},{"url":"https://github.com/Icinga/icinga2/commit/ed163a8aa9d296820dd2ad14c47bf3f6a3fcce7d","source":"security-advisories@github.com"},{"url":"https://github.com/Icinga/icinga2/pull/10908","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-wh38-wg57-5w7g","source":"security-advisories@github.com"},{"url":"https://icinga.com/blog/icinga2-security-release-v2-16-2","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-61551","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}