{"id":"CVE-2025-37731","aliases":["BIT-elasticsearch-2025-37731","GHSA-m9gh-789g-q5pv"],"url":"https://o3.security/vulnerability/CVE-2025-37731","summary":"Elasticsearch Improper Authentication","details":"Improper Authentication in Elasticsearch PKI realm can lead to user impersonation via specially crafted client certificates. A malicious actor would need to have such a crafted client certificate signed by a legitimate, trusted Certificate Authority.","published":"2025-12-15T10:42:21.840Z","modified":"2026-08-12T14:52:38.331797Z","cvss":{"score":6.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.elasticsearch:elasticsearch","fixedVersion":"8.19.8"},{"ecosystem":"Maven","name":"org.elasticsearch:elasticsearch","fixedVersion":"9.1.8"},{"ecosystem":"Maven","name":"org.elasticsearch:elasticsearch","fixedVersion":"9.2.2"}],"fix":{"url":"https://github.com/elastic/elasticsearch/commit/cd97b8566bf56e628070021300784cb9cee0286f","label":"elastic/elasticsearch@cd97b85"},"references":[{"type":"WEB","url":"https://discuss.elastic.co/t/elasticsearch-8-19-8-9-1-8-and-9-2-2-security-update-esa-2025-27/384063"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/37xxx/CVE-2025-37731.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-37731"},{"type":"WEB","url":"https://github.com/elastic/elasticsearch/commit/cd97b8566bf56e628070021300784cb9cee0286f"},{"type":"WEB","url":"https://github.com/elastic/elasticsearch/commit/d8a408da79f214395845d99d241e832077045983"},{"type":"WEB","url":"https://github.com/elastic/elasticsearch/commit/e519fe4c51a3c887675eb7daea2f914738847f23"},{"type":"PACKAGE","url":"https://github.com/elastic/elasticsearch"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T14:52:38.331797Z"}}