GHSA-c5px-58j2-7fqp

### Summary `consult_gemini_with_files` in **inline mode** read any file path supplied in the `files` argument without confining it to the working `directory`, then forwarded the contents to the Gemini CLI. Because the caller also controls `query`, the file contents are echoed back through the Gemini round-trip (and sent to Google), making this an arbitrary local file read.

### Impact An MCP client — or an LLM that has been prompt-injected into calling the tool — can read **any file the server process can access** (SSH keys, cloud credentials, `.env`, source) and have it disclosed via the tool response. No code execution by itself.

### Affected component - Tool: `consult_gemini_with_files(query, directory, files, …)`, `mode="inline"` - Sink: `_read_file_for_inline` via `_prepare_inline_payload` in `src/mcp_server.py` - The `at_command` mode already confined paths; inline mode did not.

### Root cause `_resolve_path` returned an out-of-root path while only nullifying the *display* name, and `_prepare_inline_payload` read the file regardless. Absolute paths, `..` traversal, and symlink escapes were all accepted.

### Patch Fixed in **1.3.1**. `_resolve_path` now resolves symlinks and confines via `Path.relative_to(root)`; inline mode skips any entry that resolves outside the working directory (the same guard `at_command` already enforced).

### Workarounds Upgrade to 1.3.1. Before upgrading, avoid `mode="inline"` with untrusted `files` input, or run the server with a restricted-permission user.

### Credit Reported privately by Zhihao Zhang (WPI).