{"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-2026-44429"],"ecosystem":"Go","epss":0.00167,"exploited":false,"fixed_versions":["1.7.7"],"ghsa_id":"GHSA-rqv2-m695-f8j4","id":"tcs_01M5KGNTDEXK2PDE10F1D17KQM","modified_at":"2026-06-25T23:01:36.340940916Z","published_at":"2026-06-25T22:34:38Z","references":["https://osv.dev/vulnerability/GO-2026-5637","https://github.com/modelcontextprotocol/registry/security/advisories/GHSA-rqv2-m695-f8j4","https://nvd.nist.gov/vuln/detail/CVE-2026-44429","https://github.com/modelcontextprotocol/registry/commit/78b7bbde07948049b916d76b4769faee461ff930","https://github.com/modelcontextprotocol/registry/pull/1249","https://github.com/modelcontextprotocol/registry/releases/tag/v1.7.7"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"GO-2026-5637","url":"https://osv.dev/vulnerability/GO-2026-5637"}],"summary":"MCP Registry vulnerable to stored XSS in catalogue UI via attribute-quote breakout in publisher-controlled `websiteUrl` in github.com/modelcontextprotocol/registry"}