{"id":"CVE-2026-102409","title":"Uncontrolled Recursion (CWE-674) in Elasticsearch can allow an authenticated user with low privileges to terminate an Elasticsearch node, resulting in denial of service, via Excessive Allocation (CAPEC-130).","summary":"Uncontrolled Recursion (CWE-674) in Elasticsearch can allow an authenticated user with low privileges to terminate an Elasticsearch node, resulting in denial of service, via Excessive Allocation (CAPEC-130).","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-674"],"vendor":"elastic","product":"elasticsearch","affected":["elasticsearch >= 9.2.0, < 9.4.8","elasticsearch >= 9.5.0, < 9.5.5"],"patched":["elasticsearch 9.5.5"],"published":"2026-10-06","updated":"2026-10-13","sourceUpdated":"2026-10-13T18:40:20.810","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-102409","references":[{"url":"https://discuss.elastic.co/t/elasticsearch-9-4-8-9-5-5-security-update-esa-2026-190/390863","label":"security@elastic.co"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-102409.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-102409"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-102409"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00309,"epssPercentile":0.23626,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-06T19:55:32.046618Z"},"ingestedAt":"2026-10-06T20:16:42.468Z","slug":"CVE-2026-102409","body":"## Overview\n\nUncontrolled Recursion (CWE-674) in Elasticsearch can allow an authenticated user with low privileges to terminate an Elasticsearch node, resulting in denial of service, via Excessive Allocation (CAPEC-130).\n\n## Affected\n\n- `elasticsearch >= 9.2.0, < 9.4.8`\n- `elasticsearch >= 9.5.0, < 9.5.5`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `elasticsearch 9.5.5`\n\n## Vendor advisories\n\n- **Red Hat VEX** · updated 2026-10-06 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-102409.json)","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}