{"cve":"CVE-2026-58197","nvd":{"published":"2026-09-18T17:16:57.880","modified":"2026-09-24T21:25:27.050","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","score":8.8},"cwes":["CWE-284","CWE-306"],"references":["https://github.com/stacklok/toolhive-studio/commit/968182d7f3ee1e55123369e66ad88f82128119b0","https://github.com/stacklok/toolhive-studio/pull/2469","https://github.com/stacklok/toolhive-studio/releases/tag/v0.38.0","https://github.com/stacklok/toolhive/commit/d8f40cb1599b8bf66657f2dfff15bfbfc236e712","https://github.com/stacklok/toolhive/pull/5583"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:55:23.253742848+00:00"},"epss":{"cve":"CVE-2026-58197","score":0.00372,"percentile":0.31181,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-qg2g-g9w3-m5h8","url":"https://osv.dev/vulnerability/GHSA-qg2g-g9w3-m5h8","summary":"ToolHive: containerized MCP servers can reach host services via host.docker.internal, enabling lateral movement","modified":"2026-09-28T17:10:42.435599757Z","packages":[{"ecosystem":"Go","name":"github.com/stacklok/toolhive","purl":"pkg:golang/github.com/stacklok/toolhive","ranges":["<0.30.1"],"fixed":["0.30.1"]}]},{"id":"GO-2026-6526","url":"https://osv.dev/vulnerability/GO-2026-6526","summary":"ToolHive: containerized MCP servers can reach host services via host.docker.internal, enabling lateral movement in github.com/stacklok/toolhive","modified":"2026-09-28T17:00:17.156957582Z","packages":[{"ecosystem":"Go","name":"github.com/stacklok/toolhive","purl":"pkg:golang/github.com/stacklok/toolhive","ranges":["<0.30.1"],"fixed":["0.30.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}