{"cve":"CVE-2019-8449","nvd":{"published":"2019-09-11T14:15:12.257","modified":"2026-06-17T02:42:01.093","status":"Modified","description":"The /rest/api/latest/groupuserpicker resource in Jira before version 8.4.0 allows remote attackers to enumerate usernames via an information disclosure vulnerability.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3},"cwes":["CWE-306"],"references":["http://packetstormsecurity.com/files/156172/Jira-8.3.4-Information-Disclosure.html","https://jira.atlassian.com/browse/JRASERVER-69796","http://packetstormsecurity.com/files/156172/Jira-8.3.4-Information-Disclosure.html","https://jira.atlassian.com/browse/JRASERVER-69796"],"products":["atlassian:jira"],"source":"nvd","synced_at":"2026-10-19T20:58:39.700375520+00:00"},"epss":{"cve":"CVE-2019-8449","score":0.84771,"percentile":0.99708,"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."]}