CVE-2019-3396· NVD / CVE Program· CNA atlassian

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 6.1

Noroxi assessment

Priority: Now (action score 99/100)

CISA has confirmed exploitation in the wild (Nov 3, 2021); it is known to be used in ransomware campaigns. Remediation deadline for US federal agencies: May 3, 2022.
A ready-made attack module is public (Metasploit, Nuclei); exploiting it takes no special expertise.
Probability of exploitation in the next 30 days: 99.9% (FIRST EPSS); higher than 99.9% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to CISA the attack is automatable: targets can be found by mass scanning.
According to the record, no fixed version is available yet.

Patch today or shut off access. Until a fix is released, restrict access to the affected component and follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · CISA KEV · FIRST EPSS

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.

CriticalCVSS 9.8 · v3.1KEVWeaponized No fix recorded

BDU:2019-02771

Published: Mar 25, 2019
Updated: Jun 16, 2026
EPSS: 99.9% · 99th percentile
CWE: CWE-22

Report tools

JSON

Action score

Now

Patch today or shut off access.

CVSS: 39 / 40 · 9.8 / 10
CISA KEV: 30 / 30 · Listed
EPSS: 30 / 30 · 99.9%

CISA SSVC decision

Exploitation: active
Automatable: yes
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Nov 3, 2021. That signals real attacks, not theory.

Remediation deadline for US federal agencies: May 3, 2022.

Known to be used in ransomware campaigns.

Get told when this record changes

In CISA KEV: exploitation in the wild confirmed
Weaponized exploit exists
No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
atlassian	confluence server	cpe:2.3:a:atlassian:confluence_server

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

atlassian confluence serverbefore 6.6.12
atlassian confluence server6.7.0 and later · before 6.12.3
atlassian confluence server6.13.0 and later · before 6.13.3
atlassian confluence server6.14.0 and later · before 6.14.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (atlassian). Independent of NVD's CPE analysis and usually ahead of it.

Atlassian Confluence Server
- unspecified and later · before 6.6.12affected
- 6.7.0 and later · before unspecifiedaffected
- unspecified and later · before 6.12.3affected
- next of 6.13.0 and later · before unspecifiedaffected
- unspecified and later · before 6.13.3affected
- next of 6.14.0 and later · before unspecifiedaffected
- unspecified and later · before 6.14.2affected

Same product

atlassian: all records

Other highest-scoring records for the same primary product.

CVE-2019-3398Confluence Server and Data Center had a path traversal vulnerability in the downloadallattachments resource.KEV
94Now
CVE-2017-7415Atlassian Confluence 6.x before 6.0.7 allows remote attackers to bypass authentication and read any blog or page via the drafts diff REST re
31Monitor
CVE-2016-6668The Atlassian Hipchat Integration Plugin for Bitbucket Server 6.26.0 before 6.27.5, 6.28.0 before 7.3.7, and 7.4.0 before 7.8.17; Confluence
31Monitor

Published before and after this one in the same product

← EarlierCVE-2012-6342May 13, 2014 · Cross-site request forgery (CSRF) vulnerability in logout.action in Atlassian Confluence 3.4.6 allows remote attackers to hijack the authent
27Monitor
Later →CVE-2019-20102Apr 22, 2020 · The attachment-uploading feature in Atlassian Confluence Server from version 6.14.0 through version 6.14.3, and version 6.15.0 before versio
24Monitor
Later →CVE-2020-29445May 7, 2021 · Affected versions of Confluence Server before 7.4.8, and versions from 7.5.0 before 7.11.0 allow attackers to identify internal hosts and po
17Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

Metasploit module ×1
Exploit-DB entry ×3
Nuclei detection template ×1
Proof-of-concept repository on GitHub ×22

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
Source	Kind	Date
Nuclei detection template	Nuclei template CVE-2019-3396	—
Exploit-DB entry	remote	2019-04-19
Exploit-DB entry	remote	2019-04-19
Exploit-DB entry	webapps	2021-01-22
Metasploit module	exploit/multi/http/confluence_widget_connectorAtlassian Confluence Widget Connector Macro Velocity Template Injectionexploit	2019-03-25
Proof-of-concept repository on GitHub	stars:0	2019-04-09
Proof-of-concept repository on GitHub	stars:22	2019-04-09
Proof-of-concept repository on GitHub	stars:0	2019-04-09
Proof-of-concept repository on GitHub	stars:174	2019-04-10
Proof-of-concept repository on GitHub	stars:144	2019-04-10
Proof-of-concept repository on GitHub	stars:39	2019-04-10
Proof-of-concept repository on GitHub	stars:0	2019-04-10

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

MetasploitMar 25, 2019-1 d
PublishedMar 25, 2019
First PoCApr 9, 2019+14 d
CISA KEVNov 3, 2021+953 d
TodayOct 24, 2026+2770 d

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

AtlassianBugcrowd · paid · up to $12,000

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSS vector

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

nvd-primary

Root cause

A user-supplied file name is joined with the allowed directory, but the result is never checked to confirm it is still inside that directory.

The bug in code

The whole CWE-22 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1const file = path.join(ROOT, req.query.name);
2res.sendFile(file);

Fixed

1const file = path.resolve(ROOT, req.query.name);
2if (!file.startsWith(ROOT + path.sep)) {
3  return res.sendStatus(400);
4}
5res.sendFile(file);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

jira.atlassian.com/browse/CONFSERVER-57974

Show all references (1 more)

www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-3396

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records

Noroxi analysis

What does it mean in your environment?

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Data sources and verification

CNA: atlassian

CVE.org (CNA)Oct 21, 2025, 11:45 PM UTC
CISA ADPOct 21, 2025, 11:45 PM UTC
NVDJun 16, 2026, 10:35 PM UTC
FIRST EPSSOct 9, 2026, 12:00 AM UTC
Exploit-DBOct 24, 2026, 3:18 AM UTC
MetasploitOct 24, 2026, 3:18 AM UTC
NucleiOct 24, 2026, 3:18 AM UTC
PoC-in-GitHubOct 24, 2026, 3:18 AM UTC

Each line is when that source was last processed for this record.