CVE-2020-4027Affected versions of Atlassian Confluence Server and Data Center allowed remote attackers with system administration permissions to bypass…
- 4.7MediumCVSS base score
- 1.5%Exploitation in 30 daysEPSS · top 25% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By atlassian
- 6 months later
· 6 months later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium4.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L |
- EPSS (exploitation in 30 days)
- 1.5% · top 25% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.7.
Affected products
- affected unspecified – < 7.4.5
- affected 7.5.0 – < unspecified
- affected unspecified – < 7.5.1
Atlassian · Confluence Data Center
- affected unspecified – < 7.4.5
- affected 7.5.0 – < unspecified
- affected unspecified – < 7.5.1
References
References1
- https://jira.atlassian.com/browse/CONFSERVER-59898 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2020-25292 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2020-4027)Record last updated .