n8n 1.123.96 fixes JSON highlight visibility on light theme

n8n has published version 1.123.96, dated November 13, 2026. The release contains two bug fixes and no new features are listed in its notes.

The first fix addresses the editor. JSON highlight colors were not visible on the light theme, and the change makes them readable again (PR #43690). The second item updates the @modelcontextprotocol/sdk dependency (PR #43527). The release notes do not describe what the update changes for end users, so readers should review the full changelog before assuming any behavior change.

Why it matters

Editor fixes like this affect people who inspect workflow data every day, since JSON output is read constantly while building and debugging automations. The dependency update matters for anyone using n8n’s Model Context Protocol features, because SDK changes can affect compatibility. Neither item is a feature launch, but both touch areas where problems are noticed quickly.

What to do

If you use the light theme, upgrade to 1.123.96 and confirm that JSON highlighting is readable in your editor. If you rely on MCP-based nodes or workflows, test them on a staging instance before rolling the update to production, and confirm details on the vendor’s site.