Atlassian Confluence Server and Data Center Path Traversal Vulnerability
Atlassian · Confluence Server and Data Center
A path traversal flaw in the downloadallattachments resource of Atlassian Confluence Server and Data Center allows files to be written to arbitrary locations on the server. An attacker with network access and low-privilege authentication, specifically permission to add attachments to pages or blogs, create spaces, or hold Admin rights on a space, can exploit it to achieve remote code execution on vulnerable Confluence instances.
Confluence Server and Data Center had a path traversal vulnerability in the downloadallattachments resource. A remote attacker who has permission to add attachments to pages and / or blogs or to create a new space or a personal space or who has 'Admin' permissions for a space can exploit this path traversal vulnerability to write files to arbitrary locations which can lead to remote code execution on systems that run a vulnerable version of Confluence Server or Data Center. All versions of Confluence Server from 2.0.0 before 6.6.13 (the fixed version for 6.6.x), from 6.7.0 before 6.12.4 (the fixed version for 6.12.x), from 6.13.0 before 6.13.4 (the fixed version for 6.13.x), from 6.14.0 before 6.14.3 (the fixed version for 6.14.x), and from 6.15.0 before 6.15.2 are affected by this vulnerability.
- Exploited
- Yes, in CISA KEV
- Reports
- 0
- Tactics
- 2/15
How an attack unfolds
Based on MITRE ATT&CKA public catalogue of the techniques attackers use, maintained by MITRE. Patchfirst uses it to describe what attackers do with a vulnerability. mappings. Select a step to see the evidence.Exploitation timelineDated milestones for a CVE: when it was disclosed, when exploit code became public, when exploitation was confirmed, and when threat reports named it.
First seen exploited 3 years after disclosure. Public exploit code (PoC-in-GitHub) appeared 2 days after disclosure.
- Disclosedday 0
- Public exploit codePoC-in-GitHub+2 days
CISA KEV listing is when exploitation was confirmed, not necessarily the first attack.
MITRE ATT&CKA public catalogue of the techniques attackers use, maintained by MITRE. Patchfirst uses it to describe what attackers do with a vulnerability. techniques
2 TechniqueOne specific attacker behaviour in MITRE ATT&CK, such as T1190 “Exploit Public-Facing Application”. IDs with a dot, like T1059.004, are sub-techniques., grouped by TacticThe attacker’s goal at a stage of an attack in MITRE ATT&CK, such as Initial Access or Persistence. Each technique belongs to one or more tactics. in kill-chain order 2ExecutionTA0002
CVE-2019-3398 is a path traversal vulnerability in Atlassian Confluence Server and Data Center that allows an authenticated attacker to write files to arbitrary locations, potentially leading to remote code execution
Stealth
Detection
1 rule for this CVE · 136 general rules for its techniquesRules for this CVE
1Sigma ruleAn open, vendor-neutral detection rule for log data. Security teams convert Sigma rules into searches for their own SIEM. that reference CVE-2019-3398 directly.- Confluence Exploitation CVE-2019-3398criticaltest
General rules for this CVE’s techniques
These detect the technique in general, not this specific vulnerability.
Indirect Command ExecutionT120241 general rules
- Custom File Open Handler Executes PowerShellhightest
- Diagnostic Library Sdiageng.DLL Loaded By Msdt.EXEhightest
- Outlook EnableUnsafeClientMailRules Setting Enabledhightest
- Potential Arbitrary Command Execution Using Msdt.EXEhightest
- Potential Arbitrary File Download Using Office Applicationhightest
- Potentially Suspicious Office Document Executed From Trusted Locationhightest
- Renamed NirCmd.EXE Executionhightest
- Renamed PAExec Executionhightest
Command and Scripting InterpreterT105995 general rules
- HackTool - Sliver C2 Implant Activity Patterncriticaltest
- Lazarus Group Activitycriticaltest
- REvil Kaseya Incident Malware Patternscriticaltest
- Turla Group Lateral Movementcriticaltest
- Windows Defender AMSI Trigger Detectedhighstable
- Windows Defender Threat Detectedhighstable
- Abusable DLL Potential Sideloading From Suspicious Locationhightest
- Add Insecure Download Source To Wingethightest
Sigma rules © SigmaHQ, Detection Rule License 1.1; linked, not reproduced.
What security researchers reported
Not named in any threat report yetAlso mentioned in 50 community threat pulses (AlienVault OTX)
Weaker evidencePulses are indicator collections that anyone can publish. A mention is not confirmation of exploitation.
- Actively_Exploited_Kev | Oct 29, 202628 Oct 2026
- Actively_Exploited_Kev | Oct 28, 202627 Oct 2026
- Actively_Exploited_Kev | Oct 27, 202626 Oct 2026
- Actively_Exploited_Kev | Oct 24, 202623 Oct 2026
- Actively_Exploited_Kev | Oct 23, 202622 Oct 2026
- Actively_Exploited_Kev | Oct 22, 202621 Oct 2026
- 44 more on OTX