External Control of File Name or Path Affecting mcp-atlassian package, versions [,0.17.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-MCPATLASSIAN-15518737
- published13 Mar 2026
- disclosed10 Mar 2026
- credityotampe-pluto, Gil Maman
Introduced: 10 Mar 2026
CVE-2026-27825 (opens in a new tab)How to fix?
Upgrade mcp-atlassian to version 0.17.0 or higher.
Overview
mcp-atlassian is a The Model Context Protocol (MCP) Atlassian integration is an open-source implementation that bridges Atlassian products (Jira and Confluence) with AI language models following Anthropic's MCP specification. This project enables secure, contextual AI interactions with Atlassian tools while maintaining data privacy and security. Key features include:
Affected versions of this package are vulnerable to External Control of File Name or Path via the confluence_download_attachment MCP tool. An attacker can write arbitrary files to any location accessible by the server process and potentially achieve code execution by supplying a crafted download_path parameter and uploading a malicious attachment.