{"id":"CVE-2020-4027","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-4027","generatedAt":"2026-10-27T23:28:18.179Z","title":"Affected versions of Atlassian Confluence Server and Data Center allowed remote attackers with system administration permissions to bypass velocity template injection mitigations via an injection vulnerability in custom user macros.","description":"Affected versions of Atlassian Confluence Server and Data Center allowed remote attackers with system administration permissions to bypass velocity template injection mitigations via an injection vulnerability in custom user macros. The affected versions are before version 7.4.5, and from version 7.5.0 before 7.5.1.","published":"2020-07-01T02:15:12.000Z","lastModified":"2026-06-17T03:19:27.000Z","status":"Modified","sourceIdentifier":"security@atlassian.com","cvss":{"version":"3.1","score":4.7,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L"},"cwe":["CWE-74"],"affected":["atlassian/confluence","atlassian/confluence server"],"epss":{"score":0.01515,"percentile":0.74328,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (1.52%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://jira.atlassian.com/browse/CONFSERVER-59898","tags":["Issue Tracking","Patch","Release Notes","Vendor Advisory"],"source":"security@atlassian.com"},{"url":"https://jira.atlassian.com/browse/CONFSERVER-59898","tags":["Issue Tracking","Patch","Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-4027","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}