{"id":23125,"date":"2026-09-16T00:31:22","date_gmt":"2026-09-15T16:31:22","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-54450"},"modified":"2026-09-16T00:31:22","modified_gmt":"2026-09-15T16:31:22","slug":"cve-2026-54450","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-54450","title":{"rendered":"CVE-2026-54450 &#8211; ToolHive is a utility designed to simplify the deployment and management of Model Context"},"content":{"rendered":"<p>ToolHive is a utility designed to simplify the deployment and management of Model Context Protocol (MCP) servers. Prior to 0.29.1, networking.IsPrivateIP in pkg\/networking\/utilities.go omits the IPv6 NAT64 prefixes 64:ff9b::\/96 and 64:ff9b:1::\/48, so NAT64 addresses embedding private, loopback, or link-local IPv4 targets are classified as public and allowed. The most direct attacker-controlled path begins when an external OAuth client supplies a client_id URL that CIMDStorageDecorator.GetClient routes through FetchClientMetadataDocument in pkg\/oauthproto\/cimd\/fetch.go; protectedDialerControl in pkg\/networking\/http_client.go and validateHost in pkg\/skills\/gitresolver\/reference.go share the defective classification but use operator-controlled or user-controlled destinations. On a ToolHive host behind a NAT64\/DNS64 gateway, the gateway translates an allowed address such as 64:ff9b:1::a9fe:a9fe to 169.254.169.254, permitting blind probing of internal TCP or TLS reachability. The attacker-controlled CIMD path requires HTTPS, verifies certificates, and does not reflect response bodies, so the established impact is an internal reachability oracle rather than metadata credential exfiltration; the webhook client is not affected because it does not use this IP guard. This issue is fixed in version 0.29.1.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ToolHive is a utility designed to simplify the deployment and management of Model Context Protocol (MCP) servers. Prior to 0.29.1, networking.IsPrivateIP in pkg\/networking\/utilities.go omits the IPv6 <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-23125","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/23125","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=23125"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=23125"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=23125"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}