{"id":"CVE-2026-77260","revision":"1fd2a1b750ed4ec8be5df3009c28c23a","records":[{"revision":"1fd2a1b750ed4ec8be5df3009c28c23a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-77260","aliases":[],"title":"MCP Atlassian: Arbitrary local file READ via unconstrained file_path in upload_attachment (Confluence + Jira)","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.","state":0,"publishedAt":"2026-09-22T18:03:03.077+00:00","modifiedAt":"2026-09-25T23:59:28.621+00:00","affected":[{"ecosystem":"Vendor product","name":"mcp-atlassian","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"sooperset\",\n                    \"product\": \"mcp-atlassian\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.22.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N","score":8.3,"severity":"HIGH"}],"references":["https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-f4p7-qx46-wc5j","https://github.com/sooperset/mcp-atlassian/pull/1448","https://github.com/sooperset/mcp-atlassian/commit/b041733473f95119dd539542a43c280737a8e460","https://github.com/sooperset/mcp-atlassian/releases/tag/v0.22.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-77260","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-77260","identifiers":["CVE-2026-77260"]},"retained":false,"historicalAffected":[]}],"coverage":[]}