{"cve":"CVE-2017-8438","nvd":{"published":"2017-06-05T14:29:00.280","modified":"2026-06-17T01:26:22.100","status":"Modified","description":"Elastic X-Pack Security versions 5.0.0 to 5.4.0 contain a privilege escalation bug in the run_as functionality. This bug prevents transitioning into the specified user specified in a run_as request. If a role has been created using a template that contains the _user properties, the behavior of run_as will be incorrect. Additionally if the run_as user specified does not exist, the transition will not happen.","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:H/A:H","score":8.8},"cwes":["CWE-269","CWE-284"],"references":["https://discuss.elastic.co/t/elastic-stack-5-4-1-and-5-3-3-security-updates/87952","https://www.elastic.co/blog/elasticsearch-5-4-1-and-5-3-3-released","https://www.elastic.co/community/security","https://discuss.elastic.co/t/elastic-stack-5-4-1-and-5-3-3-security-updates/87952","https://www.elastic.co/blog/elasticsearch-5-4-1-and-5-3-3-released"],"products":["elastic:x-pack"],"source":"nvd","synced_at":"2026-10-19T20:43:44.556243339+00:00"},"epss":{"cve":"CVE-2017-8438","score":0.01025,"percentile":0.63588,"date":"2026-10-31"},"kev":null,"osv":[],"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."]}