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CVE-2019-3396

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

  • Critical 9.8
  • Exploited: added to CISA KEV 3 Nov 2021
  • Used in ransomware campaigns
  • A public exploit reference is listed

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.

Key facts

Published
25 Mar 2019
Last changed
21 Oct 2025
Assigned by
atlassian
KEV added
3 Nov 2021
KEV fix due
3 May 2022
Used in ransomware
Yes, according to CISA
EPSS
99.913% likely to be exploited in the next 30 days, higher than 99.968% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: active; Automatable: yes; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 9.8CVSS 3.1, Criticalfrom CISA (ADP container)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What to do

  • Apply updates per vendor instructions.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
AtlassianConfluence Server
  • unspecified up to but excluding 6.6.12 (affected)
  • 6.7.0 up to but excluding unspecified (affected)
  • unspecified up to but excluding 6.12.3 (affected)
  • next of 6.13.0 up to but excluding unspecified (affected)
  • unspecified up to but excluding 6.13.3 (affected)
  • next of 6.14.0 up to but excluding unspecified (affected)
  • unspecified up to but excluding 6.14.2 (affected)

Timeline

  1. 25 Mar 2019 Published
  2. 3 Nov 2021 CVE-2019-3396 added to CISA KEV
  3. 3 Nov 2021 Added to the CISA KEV catalogue

Weakness

Practice this bug class

HackZoneLabs has a hands-on lab on Path traversal (CWE-22).

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References