{"id":"CVE-2019-20104","aliases":["EUVD-2019-10660","GHSA-g2rw-3cc4-qq38"],"status":"published","title":"The OpenID client application in Atlassian Crowd before version 3.6.2, and from version 3.7.0...","description":"The OpenID client application in Atlassian Crowd before version 3.6.2, and from version 3.7.0 before 3.7.1 allows remote attackers to perform a Denial of Service attack via an XML Entity Expansion vulnerability.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.02434,"percentile":0.84361,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-776"],"published":"2020-02-06T03:10:24Z","modified":"2026-06-17T02:29:59Z","products":[{"vendor":"atlassian","product":"crowd"}],"references":[{"url":"https://jira.atlassian.com/browse/CWD-5526","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://zeroauth.ltd/blog/2020/02/07/cve-2019-20104-atlassian-crowd-openid-client-vulnerable-to-remote-dos-via-xml-entity-expansion/","tags":["x_refsource_MISC","x_transferred","Exploit","Technical Description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-20104"},{"url":"https://github.com/advisories/GHSA-g2rw-3cc4-qq38"}],"sources":{"cve":[{"id":"CVE-2019-20104","description":"The OpenID client application in Atlassian Crowd before version 3.6.2, and from version 3.7.0 before 3.7.1 allows remote attackers to perform a Denial of Service attack via an XML Entity Expansion vulnerability.","status":"published","published":"2020-02-06T03:10:24.881Z","modified":"2024-09-16T17:04:16.877Z","updated_at":"2026-11-02T14:20:17.11067Z"}],"euvd":[{"id":"EUVD-2019-10660","description":"The OpenID client application in Atlassian Crowd before version 3.6.2, and from version 3.7.0 before 3.7.1 allows remote attackers to perform a Denial of Service attack via an XML Entity Expansion vulnerability.","status":"published","published":"2020-02-06T03:10:24Z","modified":"2024-09-16T17:04:16Z","updated_at":"2026-11-03T00:55:45.275329Z"}],"ghsa":[{"id":"GHSA-g2rw-3cc4-qq38","title":"The OpenID client application in Atlassian Crowd before version 3.6.2, and from version 3.7.0...","description":"The OpenID client application in Atlassian Crowd before version 3.6.2, and from version 3.7.0 before 3.7.1 allows remote attackers to perform a Denial of Service attack via an XML Entity Expansion vulnerability.","status":"published","published":"2022-05-24T17:08:08Z","modified":"2023-01-29T05:01:28Z","cwes":["CWE-776"],"updated_at":"2026-11-02T14:44:49.860954Z"}],"nvd":[{"id":"CVE-2019-20104","description":"The OpenID client application in Atlassian Crowd before version 3.6.2, and from version 3.7.0 before 3.7.1 allows remote attackers to perform a Denial of Service attack via an XML Entity Expansion vulnerability.","status":"published","published":"2020-02-06T03:15:10.123Z","modified":"2026-06-17T02:29:59.02Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-776"],"updated_at":"2026-11-02T14:05:43.875329Z"}]}}