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CVE-2026-58197

8.8 · HIGH

ToolHive is a utility designed to simplify the deployment and management of Model Context Protocol servers.

Published Sep 18, 2026CWE-284EPSS 0.37%

Overview

CVE-2026-58197 is a high-severity vulnerability. It was published on September 18, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

ToolHive is a utility designed to simplify the deployment and management of Model Context Protocol servers. Prior to ToolHive CLI 0.30.1 and ToolHive Studio 0.38.0, locally run MCP server containers use the default network permission profile without network isolation, permitting access to host.docker.internal while ToolHive API and MCP proxy endpoints are reachable without authentication. A malicious or compromised MCP server can use the Docker gateway to contact host-local services, other ToolHive-managed MCP proxies, or the ToolHive control plane without escaping the container. This access can expose data and logs, invoke sibling MCP tools, alter process or workload state, and disrupt services. ToolHive Studio additionally sends network_isolation as false and overrides the backend's secure isolation default. This issue is fixed in ToolHive CLI 0.30.1 and ToolHive Studio 0.38.0.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/stacklok/toolhive-studio/commit/968182d7f3ee1e55123369e66ad88f82128119b0GitHubgithub.com/stacklok/toolhive-studio/pull/2469GitHubgithub.com/stacklok/toolhive-studio/releases/tag/v0.38.0GitHubgithub.com/stacklok/toolhive/commit/d8f40cb1599b8bf66657f2dfff15bfbfc236e712GitHubgithub.com/stacklok/toolhive/pull/5583GitHubgithub.com/stacklok/toolhive/releases/tag/v0.30.1GitHubgithub.com/stacklok/toolhive/security/advisories/GHSA-qg2g-g9w3-m5h8GitHubgithub.com/stacklok/toolhive/security/advisories/GHSA-qg2g-g9w3-m5h8

How CyberStrike helps

Frequently asked questions

What is CVE-2026-58197?

CVE-2026-58197 is a high-severity vulnerability. It was published on September 18, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-58197?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-58197?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-58197?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-58197 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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