CVE-2026-66420 MeshCentral Cross-Site WebSocket Hijacking via Origin Validation Bypass on Self-Signed Certificate Deployments

MeshCentral 1.1.21 contains a cross-site WebSocket hijacking protection bypass vulnerability that allows unauthenticated remote attackers to hijack authenticated administrator sessions by exploiting an unconditional early return in the CheckWebServerOriginName function within webserver.js when...

CVE-2026-66420

MeshCentral 1.1.21 is affected by a cross-site WebSocket hijacking vulnerability caused by an unconditional early return in CheckWebServerOriginName() in webserver.js when using self-signed certificates. This allows unauthenticated remote attackers to initiate cross-origin WebSocket connections t...

CVE-2026-6102

MSI Center NTIOLibX64 Origin Validation Error Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of MSI Center. An attacker must first obtain the ability to execute low-privileged code on the target system in order ...

CVE-2026-6102

The CVE-2026-6102 entry concerns MSI Center NTIOLib_X64 with a local privilege-escalation flaw in the NTIOLib_X64.sys driver due to insufficient validation of the origin of commands. A local attacker who can run low-privileged code can escalate to SYSTEM and execute arbitrary code. The issue is i...

CVE-2026-6102 MSI Center NTIOLib_X64 Origin Validation Error Local Privilege Escalation Vulnerability

MSI Center NTIOLibX64 Origin Validation Error Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of MSI Center. An attacker must first obtain the ability to execute low-privileged code on the target system in order ...

EUVD-2026-50491

MSI Center NTIOLibX64 Origin Validation Error Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of MSI Center. An attacker must first obtain the ability to execute low-privileged code on the target system in order ...

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) Information Disclosure Vulnerability

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

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...

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...

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...