Zed MCP Server Jira

mcp-atlassian: Arbitrary file read via missing path validation in confluence_upload_attachment

### Summary `confluence_upload_attachment` passes `file_path` directly to `open(file_path, "rb")` with no path validation. Any authenticated MCP client — or an AI agent manipulated via prompt injection — can read any file the server process can access and exfiltrate it to Confluence as an attachment. ### Details Root cause: `src/mcp_atlassian/confluence/attachments.py`, `_upload_attachment_direct()`: ```python files = {"file": (filename, open(file_path, "rb"))} # no validate_safe_path() ```

MCP Atlassian has SSRF via unvalidated X-Atlassian-Jira-Url / X-Atlassian-Confluence-Url headers

### Summary An unauthenticated attacker who can reach the mcp-atlassian HTTP endpoint can force the server process to make outbound HTTP requests to an arbitrary attacker-controlled URL by supplying two custom HTTP headers without an `Authorization` header. No authentication is required. The vulnerability exists in the HTTP middleware and dependency injection layer — not in any MCP tool handler - making it invisible to tool-level code analysis. In cloud deployments, this could enable theft of IA

mcp-atlassian: Arbitrary file read via missing path validation in confluence_upload_attachment

### Summary `confluence_upload_attachment` passes `file_path` directly to `open(file_path, "rb")` with no path validation. Any authenticated MCP client — or an AI agent manipulated via prompt injection — can read any file the server process can access and exfiltrate it to Confluence as an attachment. ### Details Root cause: `src/mcp_atlassian/confluence/attachments.py`, `_upload_attachment_direct()`: ```python files = {"file": (filename, open(file_path, "rb"))} # no validate_safe_path() ```

mcp-atlassian: Arbitrary server-side file read via attachment upload

### Summary A client that can invoke MCP tools can read **arbitrary files from the server host** and exfiltrate them as Atlassian attachments. The attachment-upload tools take a client-supplied `file_path` and `open()` it on the **server's** filesystem. The upload tools are meant to attach a file from the **caller's** environment — the client supplies a path expecting it to refer to its own machine. Over a remote transport (HTTP/SSE) that path is instead resolved and read on the server, and th

MCP Atlassian: DNS-rebinding TOCTOU bypass of the SSRF fix (CVE-2026-27826)

### Summary GHSA-7r34-79r5-rcc9's fix added `validate_url_for_ssrf`, which resolves the attacker-controlled `X-Atlassian-{Jira,Confluence}-Url` header host **once at middleware time** and trusts the result. But the outbound request is later built with the **raw hostname** and **re-resolves at connect time with no IP pinning**. An attacker-controlled rebinding DNS name returns a public IP on the guard's lookup (validation passes) and `169.254.169.254` / an internal IP on the request's lookup (the