Vulnerability library
Security checkMarch 19, 2026

MCP Connect has unauthenticated remote OS command execution via /bridge endpoint

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High severitynpmmcp-bridge

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Description

When AUTH_TOKEN and ACCESS_TOKEN environment variables are not set (which is the default out-of-the-box configuration) the /bridge HTTP endpoint is completely unauthenticated.

Recommendation

No fix is available yet. Followings are affected versions:

  • <= 2.0.0

References

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Related Issues

See something that needs correcting? Let us knowUpdated March 19, 2026