CVE-2019-3398
Published: November 3, 2021
Official Description
Atlassian Confluence Server and Data Center contain a path traversal vulnerability in the downloadallattachments resource that may allow a privileged, remote attacker to write files. Exploitation can lead to remote code execution.
CISA KEV Advisory
Atlassian Confluence Server and Data Center Path Traversal Vulnerability
Atlassian Confluence Server and Data Center contain a path traversal vulnerability in the downloadallattachments resource that may allow a privileged, remote attacker to write files. Exploitation can lead to remote code execution.
Apply updates per vendor instructions.
Risk Analysis
Atlassian Confluence Server and Data Center are vulnerable to a path traversal flaw in the downloadallattachments resource, allowing a privileged remote attacker to write files, which can lead to remote code execution. With an EPSS score of 0.93854, the likelihood of exploitation is very high, and its inclusion in CISA's KEV confirms active exploitation, making this a critical vulnerability.
This vulnerability is actively being exploited in the wild, as confirmed by its 'in_the_wild' exploit status and inclusion in CISA's KEV. Exploitation requires a privileged, remote attacker.
Organizations using Atlassian Confluence Server and Data Center should apply all available security updates and patches immediately. Implementing strict access controls and monitoring for unusual file write activities are also recommended.
Technical Analysis
CVE-2019-3398 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2019-3398 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Affected Vendors & Products
Exploit & PoC Resources
All References (1)
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2019-3398 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1