{"id":"GO-2026-5706","revision":"d029dabf5765431bb5f615d22ea9d88a","records":[{"revision":"d029dabf5765431bb5f615d22ea9d88a","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-5706","aliases":["CVE-2026-11718","GHSA-wcpr-6g7x-p44r"],"title":"googleapis/mcp-toolbox: authentication bypass vulnerability in the generic opaque token validation path (validateOpaqueToken) in github.com/googleapis/mcp-toolbox","description":"googleapis/mcp-toolbox: authentication bypass vulnerability in the generic opaque token validation path (validateOpaqueToken) in github.com/googleapis/mcp-toolbox","state":0,"publishedAt":"2026-06-25T22:34:38+00:00","modifiedAt":"2026-06-25T23:01:29.6570703+00:00","affected":[{"ecosystem":"Go","name":"github.com/googleapis/mcp-toolbox","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.4.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["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"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-5706","license":"OSV · upstream source license applies","key":"osv:GO-2026-5706","identifiers":["GO-2026-5706","CVE-2026-11718","GHSA-wcpr-6g7x-p44r"]},"retained":false,"historicalAffected":[]}],"coverage":[]}