CVE-2020-4027 json
Affected versions of Atlassian Confluence Server and Data Center allowed remote attackers with system administration permissions to bypass…
published 2020-07-01 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-25292
- cvss
- 4.7
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 74%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Atlassian Confluence Server 7.4.5, 7.5.1
- Atlassian Confluence Data Center 7.4.5, 7.5.1
Exploit prediction
1.52% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 4.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L |
| NVD | 2.0 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
Affected products
- Atlassian Confluence Server
- Atlassian Confluence Data Center
Classification
- Weakness
-
- CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component
References
-
jira.atlassian.com
/browse/CONFSERVER-59898
issue-tracking, patch, release-notes, vendor-advisory
Sources
- CVE List CVE-2020-4027
- NVD CVE-2020-4027
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.