CVE-2020-4027

4.7 mediumEPSS 1.5%

Medium (4.7) in atlassian. EPSS 1.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

4.7 medium

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

EPSS: 1.5% chance of exploitation in the next 30 days; higher than 74% of CVEs (scores of 2026-10-31)
CWE: CWE-74
Published: 2020-07-01
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

atlassian:confluence
atlassian:confluence_server

References

https://jira.atlassian.com/browse/CONFSERVER-59898
https://jira.atlassian.com/browse/CONFSERVER-59898

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