CyberRota Analysis
AI-GeneratedThe vulnerability affects the MCP server for Atlassian products, specifically in the OAuth flow where an error query parameter is improperly handled, allowing for potential cross-site scripting (XSS) attacks. This could enable an attacker to inject malicious scripts that execute in the browser of users completing the OAuth process, compromising user data and session integrity. Organizations using versions prior to 0.22.0 of the MCP server should prioritize upgrading to mitigate this security risk.
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, the OAuth error query parameter is passed to CallbackHandler._send_response in oauth_setup.py and interpolated into an HTML page without escaping. A crafted authorization callback can inject markup or script that executes in the browser of a user completing the OAuth flow. This issue is fixed in version 0.22.0.
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