CyberRota Analysis
AI-GeneratedThe vulnerability allows authenticated MCP clients to exploit the confluence_upload_attachment function, enabling them to read and exfiltrate any file accessible to the server process, including sensitive server environment variables and credentials. This poses a significant risk to organizations using affected versions of the MCP server for Confluence and Jira, particularly if untrusted content can trigger the flaw. Organizations should prioritize patching to version 0.22.0 or later to mitigate potential data breaches.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, confluence_upload_attachment passes its client-supplied file_path directly to open(file_path, "rb") in src/mcp_atlassian/confluence/attachments.py through _upload_attachment_direct() without calling validate_safe_path. An authenticated MCP client can read any file accessible to the server process and exfiltrate it to Confluence as an attachment. If an AI agent can be induced to call the tool through untrusted content, the same flaw can disclose server environment variables such as CONFLUENCE_API_TOKEN and other credentials. This issue is fixed in version 0.22.0.