{"id":27683,"date":"2026-09-23T04:31:10","date_gmt":"2026-09-22T20:31:10","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-77266"},"modified":"2026-09-23T04:31:10","modified_gmt":"2026-09-22T20:31:10","slug":"cve-2026-77266","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-77266","title":{"rendered":"CVE-2026-77266 [MEDIUM] &#8211; MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence"},"content":{"rendered":"<p>MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, upload_attachment accepts absolute paths and traversal sequences without constraining the resolved path to the server workspace. An MCP caller with attachment access can read a chosen server-local file and exfiltrate it through Jira or Confluence. The advisory traces the vulnerable input and processing flow through upload_attachment, file_path, and path traversal, which identify the affected entry points, controls, and code paths. This issue is fixed in version 0.22.0.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, upload_attachment accepts absolute paths and traversal sequences without constrain<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-27683","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/27683","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=27683"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=27683"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=27683"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}