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CVE-2019-3396

9.8, critical Known exploited Used in ransomware

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

NVD (opens in a new tab) CVE.org (opens in a new tab) CISA KEV catalogue (opens in a new tab)
CVSS
9.8, critical critical CVSS v3.1
EPSS, next 30 days
100% higher than 99.9% of scored CVEs
Exploitation
Confirmed in the wild
Published
25 Mar 20197 years ago

Known exploited

CISA added this to the Known Exploited Vulnerabilities Catalog on 3 Nov 2021 and links it to ransomware activity. US federal agencies had to remediate by 3 May 2022, a deadline that has passed.

Required action. Apply updates per vendor instructions.

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.

Details

Vendor
Atlassian
Product
Confluence Server
Weakness
CWE-22 (opens in a new tab)
Status
Analyzed
Updated
17 Jun 2026
Assigner
security@atlassian.com

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

References 6

Exploit code 4

Patches and fixes 1

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Atlassian CVEs

Every Atlassian CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-21589 Atlassian Multiple Products Files or Directories Accessible to External Parties Vulnerability KEV EPSS 13% 7.5, high
  • CVE-2023-22527 Atlassian Confluence Data Center and Server Template Injection Vulnerability KEV EPSS 100% 9.8, critical
  • CVE-2023-22518 Atlassian Confluence Data Center and Server Improper Authorization Vulnerability KEV EPSS 100% 9.8, critical
  • CVE-2023-22515 Atlassian Confluence Data Center and Server Broken Access Control Vulnerability KEV EPSS 99% 9.8, critical
  • CVE-2022-36804 Atlassian Bitbucket Server and Data Center Command Injection Vulnerability KEV EPSS 99% 8.8, high
  • CVE-2022-26138 Atlassian Questions For Confluence App Hard-coded Credentials Vulnerability KEV EPSS 98% 9.8, critical
  • CVE-2022-26134 Atlassian Confluence Server and Data Center Remote Code Execution Vulnerability KEV EPSS 100% 9.8, critical
  • CVE-2021-26084 Atlassian Confluence Server and Data Center Object-Graph Navigation Language (OGNL) Injection Vulnerability KEV EPSS 100% 9.8, critical

Beyond this page

Is CVE-2019-3396 in your network?

This page tells you how dangerous CVE-2019-3396 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

CVE-2019-3396 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.

  • EXYS7600 OCELOT

    Find it before attackers do

    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2019-3396 comes with the devices to patch.

    Learn more about EXYS7600 OCELOT

  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

    Learn more about EXYS7950 KONDRA
Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.