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 ...

CVE-2026-59950 MCP Python SDK: WebSocket server transport does not support Host/Origin validation

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

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-2026-61451

The Grav API plugin grav-plugin-api before 1.0.4 does not validate the origin of the client-supplied adminbaseurl field in the POST /api/v1/auth/forgot-password endpoint. The sanitizeHttpUrl function only checks that the URL scheme is http/https and never verifies the host against the server's ow...

EUVD-2026-44648

The Grav API plugin grav-plugin-api before 1.0.4 does not validate the origin of the client-supplied adminbaseurl field in the POST /api/v1/auth/forgot-password endpoint. The sanitizeHttpUrl function only checks that the URL scheme is http/https and never verifies the host against the server's ow...

CVE-2026-61451 Grav before 1.0.4 Password Reset Token Poisoning via admin_base_url

The Grav API plugin grav-plugin-api before 1.0.4 does not validate the origin of the client-supplied adminbaseurl field in the POST /api/v1/auth/forgot-password endpoint. The sanitizeHttpUrl function only checks that the URL scheme is http/https and never verifies the host against the server's ow...

PT-2026-60301

Name of the Vulnerable Software and Affected Versions mcp versions prior to 1.28.1 Description The MCP Python SDK, a Python implementation of the Model Context Protocol, contains an issue in the deprecated mcp.server.websocket.websocket server transport. This component accepts WebSocket handshake...

PT-2026-60349

MSI Center NTIOLib X64 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-2026-56181

Origin validation error in Windows Network Address Translation NAT allows an unauthorized attacker to perform spoofing over an adjacent network...

Windows Network Address Translation (NAT) Spoofing Vulnerability

Origin validation error in Windows Network Address Translation NAT allows an unauthorized attacker to perform spoofing over an adjacent network...

PT-2026-58599

Name of the Vulnerable Software and Affected Versions Windows Network Address Translation NAT affected versions not specified Description An origin validation error in Windows Network Address Translation NAT allows an unauthorized attacker to perform spoofing over an adjacent network, enabling th...

PYSEC-2026-2510 Hermes Agent contains a DNS rebinding vulnerability in WebSocket endpoints that allows remote attackers to bypass Host and Origin validation

Hermes Agent before 0.16.0 contains a DNS rebinding vulnerability in WebSocket endpoints that allows remote attackers to bypass Host and Origin validation. FastAPI HTTP middleware does not execute for WebSocket upgrade requests on /api/pty, /api/ws, /api/pub, and /api/events endpoints, enabling...

Origin Validation Error

Overview Affected versions of this package are vulnerable to Origin Validation Error in the CheckAuth process. An attacker can gain unauthorized administrative access by sending requests from any Chrome or Chromium browser extension, allowing them to exfiltrate data, inject malicious scripts, and...

PT-2026-57366

Name of the Vulnerable Software and Affected Versions Authorizer versions prior to 2.0.1 Description The /authorize endpoint fails to validate the redirect uri parameter against a list of allowed origins. When the response type is set to token or id token, the server appends the access token, id...

netty-resolver-dns: Netty: Information disclosure and data manipulation due to improper CNAME record validation

A flaw was found in Netty's DnsResolveContext. This vulnerability allows a remote attacker to achieve information disclosure or data manipulation by crafting malicious DNS responses. The flaw occurs because the DnsResolveContext fails to validate the origin bailiwick of CNAME records in DNS...

Missing Origin Validation in WebSockets

Overview Affected versions of this package are vulnerable to Missing Origin Validation in WebSockets via the CORSFilter process. An attacker can access sensitive administrative REST endpoints by enticing an authorized user to visit a malicious web page, which then issues cross-origin requests and...

[20260802] - Core - Improper CORS origin validation

An improper implementation prevented configured CORS origins from being properly validated in CORS requests...

CVE-2026-59723

Cline is an autonomous coding agent as an SDK, IDE extension, or CLI assistant. Prior to 3.0.30, the Cline Hub dashboard server launched by the cline dashboard command accepts WebSocket connections on the /browser endpoint without validating the Origin header, and when ROOMSECRET is unset for loc...

CVE-2026-59804 Midscene Bridge Server - Session Hijack via Unauthenticated WebSocket

Midscene Bridge Server through 1.10.3, fixed in commit 86f4118, contains a missing authentication and CORS misconfiguration vulnerability that allows unauthenticated remote attackers to hijack active bridge sessions by opening a cross-origin WebSocket connection to the local Socket.IO server, whi...

CVE-2026-59804

Midscene Bridge Server (affected: 1.10.3 and earlier) has a missing authentication and CORS misconfiguration that permits unauthenticated remote hijacking of active bridge sessions via a cross-origin WebSocket to the local Socket.IO server. The server does not validate Origin headers and requires...