PYSEC-2026-408 MCP Atlassian has an arbitrary file write leading to arbitrary code execution via unconstrained download_path in confluence_download_attachment

Summary The confluencedownloadattachment MCP tool accepts a downloadpath parameter that is written to without any directory boundary enforcement. An attacker who can call this tool and supply or access a Confluence attachment with malicious content can write arbitrary content to any path the serv...

UploadAttachmentsAction XSRF

The UploadAttachmentsAction action is declared to use a validatingStack interceptor chain, but does not use the RequiresSecurityToken element, leaving it open to an XSRF attack. If this were exploited, an attacker could force a user’s browser to upload files into a space they have write permissio...