Vulnerability record

CVE-2019-3396

Atlassian Confluence Server and Data Center Server-Side Template Injection Vulnerability

CriticalExploitation confirmedCISA KEV Used by ransomware

What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run Confluence Server and Data Server, fix it now.

CISA required action: Apply updates per vendor instructions.

US federal civilian agencies must remediate by May 3, 2022.

Patch status

Official fix available since Sep 30, 2026

Apply the vendor's update to every affected system. Check the fixed-in versions below where known.

Basis: NVD patch reference

Patch or advisory on jira.atlassian.com (opens in a new tab)

Description

The Widget Connector macro in Atlassian Confluence Server before version 6.6.12 (the fixed version for 6.6.x), from version 6.7.0 before 6.12.3 (the fixed version for 6.12.x), from version 6.13.0 before 6.13.3 (the fixed version for 6.13.x), and from version 6.14.0 before 6.14.2 (the fixed version for 6.14.x), allows remote attackers to achieve path traversal and remote code execution on a Confluence Server or Data Center instance via server-side template injection.

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Affected products

Products affected by this vulnerability, with versions and the source of each entry
Product	Vendor	Affected versions	Fixed in	Source
Confluence Server	Atlassian	< 6.6.12; >= 6.7.0, < 6.12.3; >= 6.13.0, < 6.13.3; >= 6.14.0, < 6.14.2	6.6.12; 6.12.3; 6.13.3; 6.14.2	NVD
Confluence Server and Data Server	Atlassian	—	—	KEV

Sources: NVD = NIST National Vulnerability Database; KEV = CISA Known Exploited Vulnerabilities catalog.

Intelligence timeline

Developments from the last 30 days, newest first.

CVSS scoredUpdateKEVSep 30, 2026
CVE-2019-3396 scored CVSS 9.8: Atlassian Confluence Server and Data Server, Atlassian Confluence Server and Data Center Server-Side Template Injection Vulnerability
CISA lists this as exploited in the wild and known to be used in ransomware campaigns. Unpatched Confluence Server and Data Server systems are exposed to active attacks now.
Basis: NIST National Vulnerability Database
Patch releasedUpdateKEVSep 30, 2026
Patch released for CVE-2019-3396: Atlassian Confluence Server and Data Server, Atlassian Confluence Server and Data Center Server-Side Template Injection Vulnerability
An official fix is now available for Atlassian Confluence Server and Data Server. This vulnerability is being exploited, so apply it promptly.
Basis: NVD patch reference

1 earlier event is available with a subscription. See plans.

Coverage

We have not published a story about this vulnerability yet.

References

nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2019-3396
packetstormsecurity.com http://packetstormsecurity.com/files/152568/Atlassian-Confluence-Widget-Connector-Macro-Velocity-Template-Inje…
packetstormsecurity.com http://packetstormsecurity.com/files/161065/Atlassian-Confluence-6.12.1-Template-Injection.html
rapid7.com http://www.rapid7.com/db/modules/exploit/multi/http/confluence_widget_connector
jira.atlassian.com https://jira.atlassian.com/browse/CONFSERVER-57974
exploit-db.com https://www.exploit-db.com/exploits/46731/
cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-3396