CVE-2026-57989

Origin validation error in Microsoft Edge Chromium-based allows an unauthorized attacker to disclose information over a network...

CVE-2026-57978

Origin validation error in Microsoft Edge Chromium-based allows an unauthorized attacker to perform spoofing over a network...

EUVD-2026-49058

Origin validation error in Microsoft Edge Chromium-based allows an unauthorized attacker to disclose information over a network...

EUVD-2026-49057

Origin validation error in Microsoft Edge Chromium-based allows an unauthorized attacker to perform spoofing over a network...

CVE-2026-57978

Origin validation error in Microsoft Edge Chromium-based allows an unauthorized attacker to perform spoofing over a network...

Microsoft Edge (Chromium-based) Spoofing Vulnerability

Origin validation error in Microsoft Edge Chromium-based allows an unauthorized attacker to perform spoofing over a network...

Microsoft Edge (Chromium-based) Information Disclosure Vulnerability

Origin validation error in Microsoft Edge Chromium-based allows an unauthorized attacker to disclose information over a network...

PYSEC-2026-3483 MCP Python SDK: WebSocket server transport does not support Host/Origin validation

Summary In affected versions, the deprecated WebSocket server transport mcp.server.websocket.websocketserver accepted the WebSocket handshake without applying any Host or Origin header validation. The TransportSecuritySettings mechanism that the SSE and Streamable HTTP transports use for this...

PYSEC-2026-3536 PraisonAI: MCP SSE transport binds 0.0.0.0 with no authentication and no Origin validation; bundled SecurityConfig is never wired in

The MCP SSE server started via ToolsMCPServer.runsse / launchtoolsmcpservertransport="sse" binds to 0.0.0.0 by default and builds its Starlette application with no authentication middleware and no Origin-header validation. The module mcp/mcpsecurity.py provides exactly the needed controls origin...

PYSEC-2026-3534 PraisonAI ToolsMCPServer legacy SSE transport accepts attacker Host/Origin and exposes registered tools

PraisonAI ToolsMCPServer legacy SSE transport accepts attacker Host/Origin and exposes registered tools Summary praisonaiagents.mcp.ToolsMCPServer.runsse builds a Starlette MCP HTTP+SSE server around mcp.server.sse.SseServerTransport. The server exposes /sse and /messages/, but it does not valida...

Improper Origin Validation

MCP Python SDK is vulnerable to Improper Origin Validation. The vulnerability is due to the WebSocket transport accepting handshake requests without validating the Host or Origin headers, which allows an attacker to establish unauthorized cross-origin WebSocket connections...

EUVD-2026-44798

MCP Python SDK: WebSocket server transport does not support Host/Origin validation...

GHSA-VJ7Q-GJH5-988W MCP Python SDK: WebSocket server transport does not support Host/Origin validation

Summary In affected versions, the deprecated WebSocket server transport mcp.server.websocket.websocketserver accepted the WebSocket handshake without applying any Host or Origin header validation. The TransportSecuritySettings mechanism that the SSE and Streamable HTTP transports use for this...

MCP Python SDK: WebSocket server transport does not support Host/Origin validation

Summary In affected versions, the deprecated WebSocket server transport mcp.server.websocket.websocketserver accepted the WebSocket handshake without applying any Host or Origin header validation. The TransportSecuritySettings mechanism that the SSE and Streamable HTTP transports use for this...

CVE-2023-49899 Origin Validation Error in X-Rite MA-T6

An unauthenticated remote attacker can execute any command on the affected device due to not correctly verifying the origin of a communication channel...

CVE-2023-49899

Summary: CVE-2023-49899 affects X-Rite MAT 6 Kohinoor embedded spectrometer software. The root cause is insufficient origin validation/input validation in the communication channel, enabling a remote, unauthenticated attacker to execute commands on the device. Vulnerability details: Affected prod...

CVE-2023-49900 Origin Validation Error in X-Rite MA-T6

An unauthenticated remote attacker is able to perform remote code execution due to incorrectly sanitized user input in the SetParameter command...

CVE-2023-49900

CVE-2023-49900 affects X-Rite MAT 6 Kohinoor embedded spectrophotometer software. The issue is an origin validation error caused by incorrectly sanitized input in the SetParameter command, enabling an unauthenticated remote attacker to achieve remote code execution. The CVSS 3.1 vector is Network...

CVE-2026-59950

The MCP Python SDK, called mcp on PyPI, is a Python implementation of the Model Context Protocol MCP. Prior to 1.28.1, the deprecated mcp.server.websocket.websocketserver transport accepted WebSocket handshakes without applying Host or Origin header validation, leaving no SDK-level way to restric...

CVE-2026-59950

The MCP Python SDK (package name mcp on PyPI) contains a vulnerability in the deprecated mcp.server.websocket.websocket_server transport prior to version 1.28.1, which accepted WebSocket handshakes without Host or Origin header validation. This prevents restrictions on originating connections to ...