What is CVE-2019-3396?

CVE-2019-3396 is a critical-severity vulnerability in Atlassian Confluence Server, classified under Path Traversal. CVSS score: 9.8/10. Published 2019-03-25.

How severe is CVE-2019-3396?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2019-3396 known to be exploited?

Yes. CVE-2019-3396 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 118 public proof-of-concept repositories are indexed.

Path Traversal in Atlassian Confluence Server

CVE-2019-3396

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.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2019-03-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.999 (100.0th percentile), scored 2026-10-10.

Very high probability of exploitation in the next 30 days — among the top 0.1% most-likely-to-be-exploited CVEs. 100th percentile — 100.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

The 30-day trend appears once there are two daily scores.

Affected products

Atlassian Confluence Server — versions unspecified, 6.7.0, unspecified
Atlassian Confluence Server

Weakness classification (CWE)

CWE-22 — Path Traversal

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2021-11-03. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-05-03.

Required action: Apply updates per vendor instructions.

Known ransomware campaign use: yes.

Public proof-of-concept exploits

References

jira.atlassian.com/browse/CONFSERVER-57974 (Patch, Issue Tracking, Vendor Advisory)
packetstormsecurity.com/files/152568/Atlassian-Confluence-Widget-Connector-Macr… (Exploit, VDB Entry, Third Party Advisory)
www.rapid7.com/db/modules/exploit/multi/http/confluence_widget_connector (Exploit, VDB Entry, Third Party Advisory)
www.exploit-db.com/exploits/46731/ (Exploit, VDB Entry, Third Party Advisory, exploit)
packetstormsecurity.com/files/161065/Atlassian-Confluence-6.12.1-Template-Injec… (Exploit, VDB Entry, Third Party Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2019-3396?: CVE-2019-3396 is a critical-severity vulnerability in Atlassian Confluence Server, classified under Path Traversal. CVSS score: 9.8/10. Published 2019-03-25.
How severe is CVE-2019-3396?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2019-3396 known to be exploited?: Yes. CVE-2019-3396 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 118 public proof-of-concept repositories are indexed.