GHSA-5648-rgj9-v224: @zereight/mcp-gitlab has multiple safety-control bypasses: execute_graphql read-only + allow-list bypass, unau

### Summary @zereight/mcp-gitlab exposes GitLab to an LLM agent while relying on read-only mode, a project allow-list, and transport auth as its safety controls. Five defects defeat those controls. Under the MCP threat model, tool-call arguments/content can be shaped by untrusted input (prompt injection) or a malicious client. Reviewed commit: 60adcc0de5b0e96c4c2029f7a25d2775946421d8 (package version 2.1.28). Source review only; PoCs are local/offline. - F1 (HIGH) execute_graphql defeats BOTH read-only mode and GITLAB_ALLOWED_PROJECT_IDS. …