https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Fri, 02 Oct 2026 16:36:19 +0000 https://vulnerability.circl.lu/vuln/cve-2026-33252 <p><strong>Affected:</strong> modelcontextprotocol go-sdk</p> <p>The Go MCP SDK used Go&#39;s standard encoding/json. Prior to version 1.4.1, the Go SDK&#39;s Streamable HTTP transport accepted browser-generated cross-site `POST` requests without validating the `Origin` header and without requiring `Content-Type: application/json`. In deployments without Authorization, especially stateless or sessionless configurations, this allows an arbitrary website to send MCP requests to a local server and potentially trigger tool execution. Version 1.4.1 contains a patch for the issue.</p> <p><strong>Affected:</strong> modelcontextprotocol go-sdk</p> <p>The Go MCP SDK used Go&#39;s standard encoding/json. Prior to version 1.4.1, the Go SDK&#39;s Streamable HTTP transport accepted browser-generated cross-site `POST` requests without validating the `Origin` header and without requiring `Content-Type: application/json`. In deployments without Authorization, especially stateless or sessionless configurations, this allows an arbitrary website to send MCP requests to a local server and potentially trigger tool execution. Version 1.4.1 contains a patch for the issue.</p> https://vulnerability.circl.lu/vuln/cve-2026-33252