CISA KEV · Known exploitedCritical

CVE-2019-3396

Atlassian Confluence Server and Data Server

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.

CVSS: 9.8
EPSS: 99.9%
CISA KEV: Listed
Published: 2019.03.26

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability99.9%

Technical severityCVSS 9.8

Vulnerability overview

Affected product and versions

Product: Atlassian Confluence Server and Data Server
Affected versions: unspecified, 6.7.0, next of 6.13.0, next of 6.14.0, < 6.6.12, >= 6.7.0 < 6.12.3, >= 6.13.0 < 6.13.3, >= 6.14.0 < 6.14.2
Fixed versions: 6.6.12, 6.12.3, 6.13.3, 6.14.2

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

Apply updates per vendor instructions.

Due date: 2022.05.03

1
Identify
Confirm that Atlassian Confluence Server and Data Server and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-22
KEV added: 2021.11.03
Ransomware use: 확인됨