CVE-2026-63118: Origin Validation Error

MCP Ruby SDK is the official Ruby SDK for Model Context Protocol servers and clients. Prior to 0.23.0, MCP::Server::Transports::StreamableHTTPTransport in the mcp gem does not validate the HTTP Host or Origin request headers, which allows a malicious browser page to use DNS rebinding to reach a...

Adminer 4.6.2 - 5.4.1 Unauthenticated Persistent DoS Detection

Adminer = 5.4.1 contains a denial of service caused by lack of origin validation in version check endpoint, letting attackers trigger server errors via crafted POST requests, exploit requires no special privileges. !/usr/bin/env python3 -- coding: utf-8 -- """Adminer = 5.""" from kittysploit impo...

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...

CVE-2026-57989

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...

CVE-2026-57989: Origin Validation Error

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

CVE-2026-57978: Origin Validation Error

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...

PT-2026-64817

Name of the Vulnerable Software and Affected Versions Microsoft Edge Chromium-based affected versions not specified Description An origin validation error allows an unauthorized attacker to perform spoofing over a network. Origin validation is a security mechanism used to verify that a request...

PT-2026-64818

Name of the Vulnerable Software and Affected Versions Microsoft Edge Chromium-based affected versions not specified Description An origin validation error allows an unauthorized attacker to disclose information over a network. Origin validation is a security mechanism used to verify that a reques...

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...

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

SummaryIn 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...

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 middlewareand no Origin-header validation. The module mcp/mcpsecurity.py provides exactly the needed controlsorigin...

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...

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 Summarypraisonaiagents.mcp.ToolsMCPServer.runsse builds a Starlette MCPHTTP+SSE server around mcp.server.sse.SseServerTransport. The server exposes/sse and /messages/, but it does not validate...

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...