How severe is CVE-2019-3396?

CVE-2019-3396 has a CVSS 3.1 base score of 9.8 (CRITICAL). EPSS estimates a 99.9% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2019-3396: Atlassian Confluence Server and Data Center

CISA Known Exploited Vulnerabilities

Atlassian Confluence Server and Data Center Server-Side Template Injection Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2021-11-03

Remediation due

2022-05-03

Ransomware

Known use

Required action
Apply updates per vendor instructions.

CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2019-3396

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.

Severity

CVSS 3.1 · CISA9.8 CRITICAL

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

SSVC · CISA-ADP

Exploitationactive

Automatableyes

Technical impacttotal

Exploitation Context

as of October 14, 2026

All KEV statistics→

CISA added CVE-2019-3396 to the KEV catalog 954 days after its CVE record was published.
It is one of 13 Atlassian entries in the CISA KEV catalog, and one of 4 added in 2021.
Its current EPSS score (99.9%) is higher than that of 93% of CISA KEV entries.

Affected Products

Vendor	Product	Affected versions
Atlassian	Atlassian Confluence Server	unspecified to <6.6.12 6.7.0 to <unspecified unspecified to <6.12.3 next of 6.13.0 to <unspecified unspecified to <6.13.3 next of 6.14.0 to <unspecified unspecified to <6.14.2

References

5 Links

Exploits & PoCs

46731

Other references

Record Details

Published

2019-03-25

Last updated

2025-10-21

Assigner (CNA)

atlassian

Credited to

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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.