CVE-2026-77246

MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira).

Mcp Atlassian

MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, an HTTP transport deployment with READ_ONLY_MODE=false accepts a request without an Authorization identity and permits attacker-controlled Atlassian service headers, including X-Atlassian-Confluence-Url, to select a public attacker hostname or one allowed by MCP_ALLOWED_URL_DOMAINS. A caller can then invoke confluence_upload_attachment or the Jira attachment…

22. Sep 2026

Ausgewertete Quellen

• NVD
  CVE-2026-77246
• GitHub
  https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-wv8v-v4c5-v75j