{"id":"CVE-2026-77260","published":"2026-09-22T18:17:18.347","lastModified":"2026-09-26T01:17:02.417","description":"MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, the Confluence and Jira upload_attachment implementations accept an unconstrained file_path and open the referenced server-local file. A permitted MCP caller can upload sensitive host files to an Atlassian destination and then retrieve their contents. The advisory traces the vulnerable input and processing flow through upload_attachment, file_path, and CVE-2026-27825, which identify the affected entry points, controls, and code paths. This issue is fixed in version 0.22.0.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-22"],"vendors":[],"products":[],"references":[{"url":"https://github.com/sooperset/mcp-atlassian/commit/b041733473f95119dd539542a43c280737a8e460","tags":[]},{"url":"https://github.com/sooperset/mcp-atlassian/pull/1448","tags":[]},{"url":"https://github.com/sooperset/mcp-atlassian/releases/tag/v0.22.0","tags":[]},{"url":"https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-f4p7-qx46-wc5j","tags":[]},{"url":"https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-f4p7-qx46-wc5j","tags":[]}],"exploitRefs":[{"url":"https://github.com/sooperset/mcp-atlassian/commit/b041733473f95119dd539542a43c280737a8e460","tags":[]},{"url":"https://github.com/sooperset/mcp-atlassian/pull/1448","tags":[]},{"url":"https://github.com/sooperset/mcp-atlassian/releases/tag/v0.22.0","tags":[]},{"url":"https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-f4p7-qx46-wc5j","tags":[]},{"url":"https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-f4p7-qx46-wc5j","tags":[]}],"hasPoc":true,"ai":null}