{"schema_version":1,"title":"Model Context Protocol vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 15 vulnerabilities in Model Context Protocol: 0 in the last 7 days and 7 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-53937, was published on 9 September 2026. 2 technologies have a page of their own.","url":"https://junglewise.ai/threats/vendors/model-context-protocol","json_url":"https://junglewise.ai/threats/vendors/model-context-protocol.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/vendors/model-context-protocol","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"vendor","counts":{"high":7,"all_time":15,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":1,"last_90_days":7,"last_365_days":15},"latest":[{"cve":"CVE-2026-53937","cvss":6.2,"epss":0.0019,"slug":"cve-2026-53937-mcp-kotlin-sdk-unbounded-memory-growth-in-readbuffer","title":"MCP Kotlin SDK unbounded memory growth in ReadBuffer","severity":"medium","exploited":false,"published_at":"2026-09-09T00:17:31.407+00:00","url":"https://junglewise.ai/threats/cve-2026-53937-mcp-kotlin-sdk-unbounded-memory-growth-in-readbuffer"},{"cve":"CVE-2026-19753","cvss":7.3,"epss":0.0047,"slug":"cve-2026-19753-model-context-protocol-mcp-rdf-explorer-ssrf-in-explore-url","title":"Model Context Protocol mcp-rdf-explorer SSRF in explore_url","severity":"high","exploited":false,"published_at":"2026-08-13T23:17:14.44+00:00","url":"https://junglewise.ai/threats/cve-2026-19753-model-context-protocol-mcp-rdf-explorer-ssrf-in-explore-url"},{"cve":"CVE-2026-67431","cvss":4,"epss":0.0048,"slug":"cve-2026-67431-modelcontextprotocol-ruby-sdk-session-hijacking-in","title":"modelcontextprotocol ruby-sdk session hijacking in StreamableHTTPTransport","severity":"high","exploited":false,"published_at":"2026-07-29T20:17:12.12+00:00","url":"https://junglewise.ai/threats/cve-2026-67431-modelcontextprotocol-ruby-sdk-session-hijacking-in"},{"cve":"CVE-2026-67430","cvss":5.3,"epss":0.0051,"slug":"cve-2026-67430-model-context-protocol-ruby-sdk-memory-exhaustion-in","title":"Model Context Protocol Ruby SDK memory exhaustion in StreamableHTTPTransport","severity":"medium","exploited":false,"published_at":"2026-07-29T20:17:11.96+00:00","url":"https://junglewise.ai/threats/cve-2026-67430-model-context-protocol-ruby-sdk-memory-exhaustion-in"},{"cve":"CVE-2026-59950","cvss":4,"epss":0.0023,"slug":"cve-2026-59950-modelcontextprotocol-python-sdk-missing-origin-validation-in","title":"modelcontextprotocol python-sdk missing origin validation in WebSocket transport","severity":"high","exploited":false,"published_at":"2026-07-15T21:16:55.683+00:00","url":"https://junglewise.ai/threats/cve-2026-59950-modelcontextprotocol-python-sdk-missing-origin-validation-in"},{"cve":"CVE-2026-52870","cvss":7.6,"epss":0.0039,"slug":"cve-2026-52870-model-context-protocol-python-sdk-missing-authorization-in","title":"Model Context Protocol Python SDK missing authorization in experimental tasks","severity":"high","exploited":false,"published_at":"2026-07-15T20:17:38.577+00:00","url":"https://junglewise.ai/threats/cve-2026-52870-model-context-protocol-python-sdk-missing-authorization-in"},{"cve":"CVE-2026-52869","cvss":7.1,"epss":0.0054,"slug":"cve-2026-52869-modelcontextprotocol-mcp-authorization-bypass-in-sse-and-http","title":"modelcontextprotocol mcp authorization bypass in SSE and HTTP transports","severity":"high","exploited":false,"published_at":"2026-07-15T20:17:38.427+00:00","url":"https://junglewise.ai/threats/cve-2026-52869-modelcontextprotocol-mcp-authorization-bypass-in-sse-and-http"},{"cve":"CVE-2026-44428","cvss":4.7,"epss":0.0027,"slug":"cve-2026-44428-model-context-protocol-registry-oidc-token-replay-via-shared","title":"Model Context Protocol Registry OIDC token replay via shared audience","severity":"medium","exploited":false,"published_at":"2026-05-14T22:16:44.593+00:00","url":"https://junglewise.ai/threats/cve-2026-44428-model-context-protocol-registry-oidc-token-replay-via-shared"},{"cve":"CVE-2026-44427","cvss":4,"epss":0.0044,"slug":"cve-2026-44427-model-context-protocol-registry-open-redirect-in","title":"Model Context Protocol Registry open redirect in TrailingSlashMiddleware","severity":"medium","exploited":false,"published_at":"2026-05-14T22:16:44.45+00:00","url":"https://junglewise.ai/threats/cve-2026-44427-model-context-protocol-registry-open-redirect-in"},{"cve":"CVE-2026-45781","cvss":3.5,"epss":0.0025,"slug":"cve-2026-45781-model-context-protocol-registry-ownership-bypass-in-oci-validator","title":"Model Context Protocol Registry ownership bypass in OCI validator","severity":"low","exploited":false,"published_at":"2026-05-14T21:16:48.48+00:00","url":"https://junglewise.ai/threats/cve-2026-45781-model-context-protocol-registry-ownership-bypass-in-oci-validator"},{"cve":"CVE-2026-44430","cvss":4,"epss":0.0029,"slug":"cve-2026-44430-model-context-protocol-registry-ssrf-via-ipv6-filter-bypass","title":"Model Context Protocol Registry SSRF via IPv6 Filter Bypass","severity":"medium","exploited":false,"published_at":"2026-05-14T21:16:46.827+00:00","url":"https://junglewise.ai/threats/cve-2026-44430-model-context-protocol-registry-ssrf-via-ipv6-filter-bypass"},{"cve":"CVE-2026-44429","cvss":5.4,"epss":0.0024,"slug":"cve-2026-44429-mcp-registry-stored-xss-in-catalogue-ui-via-websiteurl","title":"MCP Registry stored XSS in catalogue UI via websiteUrl","severity":"medium","exploited":false,"published_at":"2026-05-14T21:16:46.677+00:00","url":"https://junglewise.ai/threats/cve-2026-44429-mcp-registry-stored-xss-in-catalogue-ui-via-websiteurl"},{"cve":"CVE-2026-42559","cvss":8.8,"epss":0.0024,"slug":"cve-2026-42559-model-context-protocol-rmcp-dns-rebinding-in-streamable-http","title":"Model Context Protocol RMCP DNS rebinding in Streamable HTTP server","severity":"high","exploited":false,"published_at":"2026-05-14T15:16:46.75+00:00","url":"https://junglewise.ai/threats/cve-2026-42559-model-context-protocol-rmcp-dns-rebinding-in-streamable-http"},{"cve":"CVE-2026-34237","cvss":6.1,"epss":0.0031,"slug":"cve-2026-34237-model-context-protocol-java-sdk-hardcoded-wildcard-cors-policy","title":"Model Context Protocol Java SDK hardcoded wildcard CORS policy","severity":"medium","exploited":false,"published_at":"2026-03-31T16:16:32.923+00:00","url":"https://junglewise.ai/threats/cve-2026-34237-model-context-protocol-java-sdk-hardcoded-wildcard-cors-policy"},{"cve":"CVE-2026-25536","cvss":7.1,"epss":0.0036,"slug":"cve-2026-25536-model-context-protocol-typescript-sdk-data-leak-in-mcpserver","title":"Model Context Protocol TypeScript SDK data leak in McpServer transport","severity":"high","exploited":false,"published_at":"2026-02-04T22:15:59.663+00:00","url":"https://junglewise.ai/threats/cve-2026-25536-model-context-protocol-typescript-sdk-data-leak-in-mcpserver"}],"vendor":{"hub":true,"name":"Model Context Protocol","slug":"model-context-protocol","homepage":"https://modelcontextprotocol.io","description":"The Model Context Protocol is an open standard for connecting AI models to data sources and tools.","url":"https://junglewise.ai/threats/vendors/model-context-protocol"},"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":3},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":2},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"most_severe":[{"cve":"CVE-2026-42559","cvss":8.8,"epss":0.0024,"slug":"cve-2026-42559-model-context-protocol-rmcp-dns-rebinding-in-streamable-http","title":"Model Context Protocol RMCP DNS rebinding in Streamable HTTP server","severity":"high","exploited":false,"published_at":"2026-05-14T15:16:46.75+00:00","url":"https://junglewise.ai/threats/cve-2026-42559-model-context-protocol-rmcp-dns-rebinding-in-streamable-http"},{"cve":"CVE-2026-52870","cvss":7.6,"epss":0.0039,"slug":"cve-2026-52870-model-context-protocol-python-sdk-missing-authorization-in","title":"Model Context Protocol Python SDK missing authorization in experimental tasks","severity":"high","exploited":false,"published_at":"2026-07-15T20:17:38.577+00:00","url":"https://junglewise.ai/threats/cve-2026-52870-model-context-protocol-python-sdk-missing-authorization-in"},{"cve":"CVE-2026-19753","cvss":7.3,"epss":0.0047,"slug":"cve-2026-19753-model-context-protocol-mcp-rdf-explorer-ssrf-in-explore-url","title":"Model Context Protocol mcp-rdf-explorer SSRF in explore_url","severity":"high","exploited":false,"published_at":"2026-08-13T23:17:14.44+00:00","url":"https://junglewise.ai/threats/cve-2026-19753-model-context-protocol-mcp-rdf-explorer-ssrf-in-explore-url"},{"cve":"CVE-2026-52869","cvss":7.1,"epss":0.0054,"slug":"cve-2026-52869-modelcontextprotocol-mcp-authorization-bypass-in-sse-and-http","title":"modelcontextprotocol mcp authorization bypass in SSE and HTTP transports","severity":"high","exploited":false,"published_at":"2026-07-15T20:17:38.427+00:00","url":"https://junglewise.ai/threats/cve-2026-52869-modelcontextprotocol-mcp-authorization-bypass-in-sse-and-http"},{"cve":"CVE-2026-25536","cvss":7.1,"epss":0.0036,"slug":"cve-2026-25536-model-context-protocol-typescript-sdk-data-leak-in-mcpserver","title":"Model Context Protocol TypeScript SDK data leak in McpServer transport","severity":"high","exploited":false,"published_at":"2026-02-04T22:15:59.663+00:00","url":"https://junglewise.ai/threats/cve-2026-25536-model-context-protocol-typescript-sdk-data-leak-in-mcpserver"},{"cve":"CVE-2026-67431","cvss":4,"epss":0.0048,"slug":"cve-2026-67431-modelcontextprotocol-ruby-sdk-session-hijacking-in","title":"modelcontextprotocol ruby-sdk session hijacking in StreamableHTTPTransport","severity":"high","exploited":false,"published_at":"2026-07-29T20:17:12.12+00:00","url":"https://junglewise.ai/threats/cve-2026-67431-modelcontextprotocol-ruby-sdk-session-hijacking-in"},{"cve":"CVE-2026-59950","cvss":4,"epss":0.0023,"slug":"cve-2026-59950-modelcontextprotocol-python-sdk-missing-origin-validation-in","title":"modelcontextprotocol python-sdk missing origin validation in WebSocket transport","severity":"high","exploited":false,"published_at":"2026-07-15T21:16:55.683+00:00","url":"https://junglewise.ai/threats/cve-2026-59950-modelcontextprotocol-python-sdk-missing-origin-validation-in"},{"cve":"CVE-2026-53937","cvss":6.2,"epss":0.0019,"slug":"cve-2026-53937-mcp-kotlin-sdk-unbounded-memory-growth-in-readbuffer","title":"MCP Kotlin SDK unbounded memory growth in ReadBuffer","severity":"medium","exploited":false,"published_at":"2026-09-09T00:17:31.407+00:00","url":"https://junglewise.ai/threats/cve-2026-53937-mcp-kotlin-sdk-unbounded-memory-growth-in-readbuffer"},{"cve":"CVE-2026-34237","cvss":6.1,"epss":0.0031,"slug":"cve-2026-34237-model-context-protocol-java-sdk-hardcoded-wildcard-cors-policy","title":"Model Context Protocol Java SDK hardcoded wildcard CORS policy","severity":"medium","exploited":false,"published_at":"2026-03-31T16:16:32.923+00:00","url":"https://junglewise.ai/threats/cve-2026-34237-model-context-protocol-java-sdk-hardcoded-wildcard-cors-policy"},{"cve":"CVE-2026-44429","cvss":5.4,"epss":0.0024,"slug":"cve-2026-44429-mcp-registry-stored-xss-in-catalogue-ui-via-websiteurl","title":"MCP Registry stored XSS in catalogue UI via websiteUrl","severity":"medium","exploited":false,"published_at":"2026-05-14T21:16:46.677+00:00","url":"https://junglewise.ai/threats/cve-2026-44429-mcp-registry-stored-xss-in-catalogue-ui-via-websiteurl"}],"generated_at":"2026-09-26T16:07:00.132667+00:00","technologies":[{"name":"Model Context Protocol Registry","slug":"registry","vulnerabilities":5,"url":"https://junglewise.ai/threats/technologies/registry"},{"name":"Model Context Protocol Python SDK","slug":"mcp-python-sdk","vulnerabilities":4,"url":"https://junglewise.ai/threats/technologies/mcp-python-sdk"}]}