{"cve":"CVE-2018-17244","nvd":{"published":"2018-12-20T22:29:00.240","modified":"2026-06-17T01:45:35.463","status":"Modified","description":"Elasticsearch Security versions 6.4.0 to 6.4.2 contain an error in the way request headers are applied to requests when using the Active Directory, LDAP, Native, or File realms. A request may receive headers intended for another request if the same username is being authenticated concurrently; when used with run as, this can result in the request running as the incorrect user. This could allow a user to access information that they should not have access to.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":6.5},"cwes":["CWE-200","CWE-362"],"references":["http://www.securityfocus.com/bid/106318","https://discuss.elastic.co/t/elastic-stack-6-4-3-and-5-6-13-security-update/155594","https://www.elastic.co/community/security","http://www.securityfocus.com/bid/106318","https://discuss.elastic.co/t/elastic-stack-6-4-3-and-5-6-13-security-update/155594"],"products":["elastic:elasticsearch"],"source":"nvd","synced_at":"2026-10-19T20:54:36.112582389+00:00"},"epss":{"cve":"CVE-2018-17244","score":0.01456,"percentile":0.73484,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-vpqm-88c4-x4cv","url":"https://osv.dev/vulnerability/GHSA-vpqm-88c4-x4cv","summary":"Exposure of Sensitive Information to an Unauthorized Actor in Elasticsearch","modified":"2023-11-08T04:00:03.900366Z","packages":[{"ecosystem":"Maven","name":"org.elasticsearch:elasticsearch","purl":"pkg:maven/org.elasticsearch/elasticsearch","ranges":[">=6.4.0 <6.4.3"],"fixed":["6.4.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}