{"id":"GO-2026-4569","summary":"MCP Go SDK Vulnerable to Improper Handling of Case Sensitivity in github.com/modelcontextprotocol/go-sdk","details":"MCP Go SDK Vulnerable to Improper Handling of Case Sensitivity in github.com/modelcontextprotocol/go-sdk","aliases":["CVE-2026-27896","GHSA-wvj2-96wp-fq3f"],"modified":"2026-03-23T04:52:45.041522Z","published":"2026-03-10T18:28:01Z","related":["CGA-vfrx-695v-7wq5"],"database_specific":{"url":"https://pkg.go.dev/vuln/GO-2026-4569","review_status":"UNREVIEWED"},"references":[{"type":"ADVISORY","url":"https://github.com/modelcontextprotocol/go-sdk/security/advisories/GHSA-wvj2-96wp-fq3f"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27896"},{"type":"FIX","url":"https://github.com/modelcontextprotocol/go-sdk/commit/7b8d81c264074404abdf5aa16e2cf0c2d9c64cc0"}],"affected":[{"package":{"name":"github.com/modelcontextprotocol/go-sdk","ecosystem":"Go","purl":"pkg:golang/github.com/modelcontextprotocol/go-sdk"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.3.1"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-4569.json"}}],"schema_version":"1.7.5"}