Evidence record / cursor
A dated record of one change, kept so the writing that cites it can be checked. Compiled from the sources listed below by the research run, not written for reading. The judgment lives in the issues that cite it, below.
2026-10-24-cursor-cli-mcp-auto-review-now-receives-schemas-encoded-as-json-strings
CLI MCP Auto-review now receives schemas encoded as JSON strings. Auto-review now sees a tool’s input schema when an MCP server supplies it as a JSON string. The note identifies a missing review input, not a demonstrated arbitrary-execution path.
Channel: tagged-release. Half: defect. Date: 2026-10-22.
Operator consequence: Requalify approval decisions for affected servers with a harmless tool and inspect the schema the reviewer receives. This repair does not make model review a security boundary.
Receipt
Finding metadata
Run: 2026-10-24-weekly-digest-2026-10-13_2026-10-24-frontier-v0
Finding ID: 2026-10-24-cursor-cli-mcp-auto-review-now-receives-schemas-encoded-as-json-strings
Profile citations
- cursor / claim / mcp-json-schema-auto-review
Source links
Primary links, including exact changelog lines when available.
- official docs2026-10-24-cursor-cli-mcp-auto-review-now-receives-schemas-encoded-as-json-stringscursor.com/docs/cli/changelog#oct-22-2026official docs2026-10-24-cursor-cli-mcp-auto-review-now-receives-schemas-encoded-as-json-stringsdownloads.cursor.com/lab/2026.10.22-27dcf5f/darwin/arm64/agent-cli-package.tar.gz
Versioned source: run artifact