November 3, 2021 · Applied Cybernetics Group
CVE-2019-3396 — Atlassian Confluence Server and Data Server
known ransomware use
Atlassian Confluence Server and Data Center Server-Side Template Injection Vulnerability
- Added to KEV
2021-11-03- Federal due date
2022-05-03- Vendor
- Atlassian
- Product
- Confluence Server and Data Server
- EPSS
- 100.0th percentile (score 0.999, as of
2026-07-13) - NVD CVSS v3.1
- —
- Ransomware use
- Known
- ATT&CK
- T1090 , T1133 , T1202 · signal rollup
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2019-3396
CISA short description
Atlassian Confluence Server and Data Center contain a server-side template injection vulnerability that may allow an attacker to achieve path traversal and remote code execution.
Required action
Apply updates per vendor instructions.