{"action":"Upgrade github.com/googleapis/mcp-toolbox to 1.4.0 or later.","affected":[{"fixed":"1.4.0","introduced":"0"}],"component":"github.com/googleapis/mcp-toolbox","cve_ids":["CVE-2026-11718"],"ecosystem":"Go","epss":0.00185,"exploited":false,"fixed_versions":["1.4.0"],"ghsa_id":"GHSA-wcpr-6g7x-p44r","id":"tcs_01M5KGP986X94XHA9M3K7C6MZ4","modified_at":"2026-06-25T23:01:29.657070254Z","published_at":"2026-06-25T22:34:38Z","references":["https://osv.dev/vulnerability/GO-2026-5706","https://github.com/advisories/GHSA-wcpr-6g7x-p44r","https://nvd.nist.gov/vuln/detail/CVE-2026-11718","https://github.com/googleapis/mcp-toolbox/pull/3360"],"severity":{"label":"critical","score":9.1},"sources":[{"source":"osv","source_id":"GO-2026-5706","url":"https://osv.dev/vulnerability/GO-2026-5706"},{"source":"nvd","source_id":"CVE-2026-11718","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-11718"}],"summary":"googleapis/mcp-toolbox: authentication bypass vulnerability in the generic opaque token validation path (validateOpaqueToken) in github.com/googleapis/mcp-toolbox"}