CVE-2019-3398: Atlassian Confluence Server and Data Center Path Traversal Vulnerability
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
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.
CSIRTS triage
- What
- Atlassian Confluence Server and Data Center contain a path traversal vulnerability that may allow a privileged, remote attacker to write files, potentially leading to remote code execution.
- Who is affected
- Deployments of Atlassian Confluence Server and Data Center are affected.
- Urgency
- Remediation is urgent due to active exploitation and critical severity.
- Action
- Apply the latest security updates for Confluence.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2019-3398
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Exploitation confirmedCVE-2019-3398Already exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 99.9% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2019-3398 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Atlassian Confluence Server
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- highCVE-2026-73498: MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and …nvd · 2026-08-12
- criticalexploitedCVE-2023-22527: Atlassian Confluence Data Center and Server Template Injection Vulnerabilitycisa-kev · 2024-01-24
- criticalexploitedCVE-2023-22518: Atlassian Confluence Data Center and Server Improper Authorization Vulnerabilitycisa-kev · 2023-11-07
- criticalexploitedCVE-2023-22515: Atlassian Confluence Data Center and Server Broken Access Control Vulnerabilitycisa-kev · 2023-10-05
- criticalexploitedCVE-2022-26134: Atlassian Confluence Server and Data Center Remote Code Execution Vulnerabilitycisa-kev · 2022-06-02
- criticalexploitedCVE-2021-26085: Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerabilitycisa-kev · 2022-03-28
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