{"action":"Upgrade github.com/modelcontextprotocol/registry to 1.7.7 or later.","affected":[{"fixed":"1.7.7","introduced":"0"}],"component":"github.com/modelcontextprotocol/registry","cve_ids":["CVE-2026-44430"],"ecosystem":"Go","epss":0.00285,"exploited":false,"fixed_versions":["1.7.7"],"ghsa_id":"GHSA-r48c-v28r-pf6v","id":"tcs_01M5KGNKAT2B2DTMJZAKVYYVVR","modified_at":"2026-06-25T23:01:24.328460057Z","published_at":"2026-06-25T22:34:34Z","references":["https://osv.dev/vulnerability/GO-2026-5607","https://github.com/modelcontextprotocol/registry/security/advisories/GHSA-r48c-v28r-pf6v","https://nvd.nist.gov/vuln/detail/CVE-2026-44430","https://github.com/modelcontextprotocol/registry/commit/f5f40bd98084466eaf18fe48ea62a0d534caa774","https://github.com/modelcontextprotocol/registry/pull/1250","https://github.com/modelcontextprotocol/registry/releases/tag/v1.7.7"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"GO-2026-5607","url":"https://osv.dev/vulnerability/GO-2026-5607"}],"summary":"MCP Registry has an unauthenticated SSRF: HTTP namespace verification dials 6to4 / NAT64 / site-local IPv6 addresses, bypassing private-address allowlist in github.com/modelcontextprotocol/registry"}