{"schema_version":1,"title":"Anthropic @Modelcontextprotocol/Sdk vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 4 vulnerabilities in Anthropic @Modelcontextprotocol/Sdk: 0 in the last 7 days and 4 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-111769, was published on 5 November 2026. 3 vulnerabilities in the last four weeks, up 200% on the four before (1).","url":"https://junglewise.ai/threats/technologies/anthropic-modelcontextprotocol-sdk","json_url":"https://junglewise.ai/threats/technologies/anthropic-modelcontextprotocol-sdk.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/technologies/anthropic-modelcontextprotocol-sdk","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","thin":false,"counts":{"high":2,"all_time":4,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":3,"last_90_days":4,"last_365_days":4},"latest":[{"cve":"CVE-2026-111769","cvss":6.5,"slug":"cve-2026-111769-mcp-typescript-client-sdk-http-client-transports-and-oauth","title":"MCP TypeScript client SDK credential leak via cross-origin redirects","severity":"medium","exploited":false,"published_at":"2026-11-05T22:17:45.637+00:00","url":"https://junglewise.ai/threats/cve-2026-111769-mcp-typescript-client-sdk-http-client-transports-and-oauth"},{"cve":"CVE-2026-111768","cvss":7.5,"slug":"cve-2026-111768-mcp-typescript-sdk-one-http-request-within-the-default-size","title":"MCP TypeScript SDK memory exhaustion via unbounded validation","severity":"high","exploited":false,"published_at":"2026-11-05T22:17:45.457+00:00","url":"https://junglewise.ai/threats/cve-2026-111768-mcp-typescript-sdk-one-http-request-within-the-default-size"},{"cve":"CVE-2026-111771","cvss":6.8,"slug":"cve-2026-111771-mcp-typescript-sdk-server-bearer-authentication-accepted-tokens","title":"MCP TypeScript SDK bearer authentication token validation bypass","severity":"medium","exploited":false,"published_at":"2026-11-05T21:18:35.973+00:00","url":"https://junglewise.ai/threats/cve-2026-111771-mcp-typescript-sdk-server-bearer-authentication-accepted-tokens"},{"cve":"CVE-2026-104850","cvss":7.5,"slug":"cve-2026-104850-mcp-typescript-sdk-oauth-client-could-send-credentials-to-an","title":"MCP TypeScript SDK OAuth client credential injection via untrusted server","severity":"high","exploited":false,"published_at":"2026-10-06T17:17:15.827+00:00","url":"https://junglewise.ai/threats/cve-2026-104850-mcp-typescript-sdk-oauth-client-could-send-credentials-to-an"}],"weekly":[{"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":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-05","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-10-12","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-19","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-26","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-02","critical":0,"exploited":0,"vulnerabilities":3},{"week":"2026-11-09","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"Anthropic Claude Code","slug":"claude-code","vulnerabilities":31,"url":"https://junglewise.ai/threats/technologies/claude-code"},{"name":"Anthropic Model Context Protocol","slug":"model-context-protocol","vulnerabilities":11,"url":"https://junglewise.ai/threats/technologies/model-context-protocol"},{"name":"Anthropic Claude Desktop","slug":"claude-desktop","vulnerabilities":6,"url":"https://junglewise.ai/threats/technologies/claude-desktop"},{"name":"Anthropic Model Context Protocol SDK (TypeScript)","slug":"model-context-protocol-sdk-typescript","vulnerabilities":5,"url":"https://junglewise.ai/threats/technologies/model-context-protocol-sdk-typescript"},{"name":"Anthropic Claude Agent SDK","slug":"claude-agent-sdk","vulnerabilities":4,"url":"https://junglewise.ai/threats/technologies/claude-agent-sdk"},{"name":"Anthropic Model Context Protocol Python SDK","slug":"anthropic-model-context-protocol-python-sdk","vulnerabilities":3,"url":"https://junglewise.ai/threats/technologies/anthropic-model-context-protocol-python-sdk"},{"name":"Anthropic Claude Code CLI","slug":"claude-code-cli","vulnerabilities":3,"url":"https://junglewise.ai/threats/technologies/claude-code-cli"}],"technology":{"hub":true,"name":"Anthropic @Modelcontextprotocol/Sdk","slug":"anthropic-modelcontextprotocol-sdk","vendor":{"hub":true,"name":"Anthropic","slug":"anthropic","url":"https://junglewise.ai/threats/vendors/anthropic"},"aliases":[],"category":"library","repo_url":"https://github.com/modelcontextprotocol/python-sdk","description":"Software development kit for building Model Context Protocol servers and clients.","url":"https://junglewise.ai/threats/technologies/anthropic-modelcontextprotocol-sdk"},"most_severe":[{"cve":"CVE-2026-111768","cvss":7.5,"slug":"cve-2026-111768-mcp-typescript-sdk-one-http-request-within-the-default-size","title":"MCP TypeScript SDK memory exhaustion via unbounded validation","severity":"high","exploited":false,"published_at":"2026-11-05T22:17:45.457+00:00","url":"https://junglewise.ai/threats/cve-2026-111768-mcp-typescript-sdk-one-http-request-within-the-default-size"},{"cve":"CVE-2026-104850","cvss":7.5,"slug":"cve-2026-104850-mcp-typescript-sdk-oauth-client-could-send-credentials-to-an","title":"MCP TypeScript SDK OAuth client credential injection via untrusted server","severity":"high","exploited":false,"published_at":"2026-10-06T17:17:15.827+00:00","url":"https://junglewise.ai/threats/cve-2026-104850-mcp-typescript-sdk-oauth-client-could-send-credentials-to-an"},{"cve":"CVE-2026-111771","cvss":6.8,"slug":"cve-2026-111771-mcp-typescript-sdk-server-bearer-authentication-accepted-tokens","title":"MCP TypeScript SDK bearer authentication token validation bypass","severity":"medium","exploited":false,"published_at":"2026-11-05T21:18:35.973+00:00","url":"https://junglewise.ai/threats/cve-2026-111771-mcp-typescript-sdk-server-bearer-authentication-accepted-tokens"},{"cve":"CVE-2026-111769","cvss":6.5,"slug":"cve-2026-111769-mcp-typescript-client-sdk-http-client-transports-and-oauth","title":"MCP TypeScript client SDK credential leak via cross-origin redirects","severity":"medium","exploited":false,"published_at":"2026-11-05T22:17:45.637+00:00","url":"https://junglewise.ai/threats/cve-2026-111769-mcp-typescript-client-sdk-http-client-transports-and-oauth"}],"generated_at":"2026-11-13T03:07:00.155039+00:00"}