Contentful MCP Server: export_space/import_space tools pass LLM-controlled `host`/`proxy` args to CMA client, redirec...

Date Aug 19, 2026
Type Vendor advisory
Signal High-risk advisory
Vendor / Product npm ยท @contentful/mcp-server
CVE CVE-2026-53957
High-risk advisory CVE-2026-53957

Summary

Contentful MCP Server: export_space/import_space tools pass LLM-controlled `host`/`proxy` args to CMA client, redirecting server PAT to attacker-controlled endpoint

Why it matters

GitHub has published a reviewed security advisory for @contentful/mcp-server. Prioritize it with other application dependency updates.

Operator check

Check whether @contentful/mcp-server is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available.

Sources

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.