{"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_01M5KFQMMBTZJXG6GXMSKEZBQ0","modified_at":"2026-06-25T23:11:04.641371574Z","published_at":"2026-06-18T15:32:01Z","references":["https://osv.dev/vulnerability/GHSA-wcpr-6g7x-p44r","https://nvd.nist.gov/vuln/detail/CVE-2026-11718","https://github.com/googleapis/mcp-toolbox/pull/3360","https://github.com/googleapis/mcp-toolbox"],"severity":{"label":"critical","score":9.1},"sources":[{"source":"osv","source_id":"GHSA-wcpr-6g7x-p44r","url":"https://osv.dev/vulnerability/GHSA-wcpr-6g7x-p44r"},{"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)"}