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CVE-2026-42856: Network-AI missing authentication on MCP HTTP endpoint, which allows unauthenticated privileged tool calls

May 5, 2026 (updated May 13, 2026)

The MCP HTTP transport accepts JSON-RPC tools/call requests with no authentication, session, origin, or token check, and dispatches them directly to the orchestrator’s tool registry. The default bind address is 0.0.0.0. As a result, any party with network reachability to the service can enumerate and invoke privileged management tools — including reading and mutating the live orchestrator configuration, listing registered agents, dispatching agents, creating/revoking security tokens, and adjusting global budget ceilings.

References

  • github.com/Jovancoding/Network-AI/security/advisories/GHSA-fj4g-2p96-q6m3
  • github.com/advisories/GHSA-fj4g-2p96-q6m3
  • nvd.nist.gov/vuln/detail/CVE-2026-42856

Code Behaviors & Features

Detect and mitigate CVE-2026-42856 with GitLab Dependency Scanning

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Affected versions

All versions before 5.1.3

Fixed versions

  • 5.1.3

Solution

Upgrade to version 5.1.3 or above.

Impact 7.5 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Learn more about CVSS

Weakness

  • CWE-306: Missing Authentication for Critical Function

Source file

npm/network-ai/CVE-2026-42856.yml

Spotted a mistake? Edit the file on GitLab.

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