websocket-driver: Memory exhaustion via abuse of protocol length headers

Impact The frame format in draft versions of the WebSocket protocol includes a length header that allows an arbitrarily large integer to be encoded as a sequence of bytes with the high bit set. By sending an indefinite sequence of bytes with values 0x80 or above, a server or client can make the...

CVE-2026-54458

WWBN AVideo is an open source video platform. Versions prior to 29.0 contain a stored DOM Cross-Site Scripting vulnerability in the YPTSocket plugin. Any unauthenticated remote attacker can execute arbitrary JavaScript in the authenticated origin of every administrator currently viewing a page th...

CVE-2026-54458

CVE-2026-54458 (AVideo YPTSocket XSS) affects WWBN’s AVideo with the YPTSocket plugin (versions prior to 29.0). The vulnerability is an unauthenticated stored DOM XSS: getWebSocket.json.php issues a signed WebSocket token; MessageSQLiteV2::onOpen reads webSocketSelfURI and page_title from the Web...

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-2026-49279 WWBN AVideo: Stored XSS via autoEvalCodeOnHTML Bypass in MessageSQLite WebSocket Handler (CVE-2026-43874 Bypass)

WWBN AVideo is an open source video platform. Versions 29.0 and below contain a Stored XSS vulnerability through the autoEvalCodeOnHTML parameter in the MessageSQLite WebSocket Handler. The MessageSQLite.php handler only strips autoEvalCodeOnHTML from $json'msg', but msgToResourceId reads from...

CVE-2026-49279

CVE-2026-49279 (WWBN AVideo) describes a stored XSS in the WebSocket messaging system. The vulnerability arises because MessageSQLite.php only strips autoEvalCodeOnHTML from json["msg"], while msgToResourceId() favors json over msg, allowing an attacker to place the payload in json and bypass san...

CVE-2026-49279 WWBN AVideo: Stored XSS via autoEvalCodeOnHTML Bypass in MessageSQLite WebSocket Handler (CVE-2026-43874 Bypass)

WWBN AVideo is an open source video platform. Versions 29.0 and below contain a Stored XSS vulnerability through the autoEvalCodeOnHTML parameter in the MessageSQLite WebSocket Handler. The MessageSQLite.php handler only strips autoEvalCodeOnHTML from $json'msg', but msgToResourceId reads from...

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

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-2026-59950 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-2026-62389

Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority as a duplicate of CVE-2026-48779...

CVE-2026-62389

CVE-2026-62389 affects the ws library (before 8.21.1). The root cause is a memory exhaustion condition in lib/receiver.js where the fragment guard only triggers at maxFragments, allowing an attacker to exhaust heap memory by sending incomplete fragmented WebSocket messages (text frame FIN=0 plus ...

EUVD-2026-44729

ws before 8.21.1 contains a memory exhaustion vulnerability in lib/receiver.js where the fragment guard only triggers when fragment count reaches maxFragments, allowing attackers to exhaust memory by sending incomplete fragmented WebSocket messages. Attackers can send a text frame with FIN=0...

CVE-2026-62389

This CVE ID has been rejected or withdrawn by its CVE Numbering Authority as a duplicate of CVE-2026-48779...

CVE-2026-62389

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CVE-2026-62389 ws < 8.21.1 Default maxFragments Allows Memory Exhaustion DoS

ws before 8.21.1 contains a memory exhaustion vulnerability in lib/receiver.js where the fragment guard only triggers when fragment count reaches maxFragments, allowing attackers to exhaust memory by sending incomplete fragmented WebSocket messages. Attackers can send a text frame with FIN=0...

CVE-2026-62389

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CVE-2026-62389

Removed by vendor...

undici: undici: Denial of Service due to unbounded memory growth via WebSocket frames

A flaw was found in undici. A malicious WebSocket server can exploit this by streaming numerous small or empty continuation frames. This can bypass per-frame and cumulative-size validation, leading to unbounded memory growth in the client process. The primary consequence is memory exhaustion,...