n8n-MCP Logs Sensitive Request Data on Unauthorized /mcp Requests

Impact When n8n-mcp runs in HTTP transport mode, incoming requests to the POST /mcp endpoint had their request metadata written to server logs regardless of the authentication outcome. In deployments where logs are collected, forwarded to external systems, or viewable outside the request trust...

Insertion of Sensitive Information into Log File

Overview n8n-mcp is an Integration between n8n workflow automation and Model Context Protocol MCP Affected versions of this package are vulnerable to Insertion of Sensitive Information into Log File in the POST /mcp endpoint. An attacker can cause sensitive information such as bearer tokens, API...

hospital-waf-mcp

Hospital WAF Management System Release: v1.0.0 Languag...

CVE-2026-6942: Improper Neutralization of Special Elements used in an OS Command

radare2-mcp version 1.6.0 and earlier contains an os command injection vulnerability that allows remote attackers to execute arbitrary commands by bypassing the command filter through shell metacharacters in user-controlled input passed to r2cmdstr. Attackers can inject shell metacharacters throu...

PT-2026-34682

Name of the Vulnerable Software and Affected Versions n8n-mcp versions prior to 2.47.11 Description When running in HTTP transport mode, incoming requests to the 'POST /mcp' endpoint have their request metadata written to server logs regardless of whether authentication is successful. This can le...

Allocation of Resources Without Limits or Throttling

Overview @next-ai-drawio/mcp-server is a MCP server for Next AI Draw.io - AI-powered diagram generation with real-time browser preview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling through the handleStateApi, handleRestoreApi, and...

Malicious Package

Overview claudcode-mcp is a malicious package. This package contains malicious code, and its content was removed from the official package manager. While this package might be attempting to impersonate a valid organization, there is no connection between that organization and this package...

Malicious code in claudcode-mcp (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 88f4d319ca32cad5bc9a2f83d4b1b64c39f2d1e75f2fed26cc1172d480891b69 The package claudcode-mcp was found to contain malicious code. Source: ghsa-malware 65a350de7c4fa0545fcd3fa1439e9ea34afa50e5237688032de7bcafeb071ab0...

MAL-2026-2974 Malicious code in claudcode-mcp (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 88f4d319ca32cad5bc9a2f83d4b1b64c39f2d1e75f2fed26cc1172d480891b69 The package claudcode-mcp was found to contain malicious code. Source: ghsa-malware 65a350de7c4fa0545fcd3fa1439e9ea34afa50e5237688032de7bcafeb071ab0...

PT-2026-36902

Name of the Vulnerable Software and Affected Versions n8n versions prior to 1.123.32 n8n versions prior to 2.17.4 n8n versions prior to 2.18.1 Description The '/mcp-oauth/register' endpoint allows OAuth client registrations without authentication, which permits the registration of arbitrary...

CVE-2026-40933

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, due to unsafe serialization of stdio commands in the MCP adapter, an authenticated attacker can add an MCP stdio server with an arbitrary command, achieving command execution. The vulnerabilit...

CVE-2026-40933 Flowise: Authenticated RCE Via MCP Adapters

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, due to unsafe serialization of stdio commands in the MCP adapter, an authenticated attacker can add an MCP stdio server with an arbitrary command, achieving command execution. The vulnerabilit...

CVE-2026-40933

Flowise: Authenticated RCE via MCP adapters. Prior to 3.1.0, unsafe serialization of stdio commands in the MCP adapter allows an authenticated attacker to add an MCP stdio server and run arbitrary OS commands, due to a bug in input sanitization in the Custom MCP configuration (http://localhost:30...

CVE-2026-40576

excel-mcp-server is a Model Context Protocol server for Excel file manipulation. A path traversal vulnerability exists in excel-mcp-server versions up to and including 0.1.7. When running in SSE or Streamable-HTTP transport mode the documented way to use this server remotely, an unauthenticated...

CVE-2026-40576

excel-mcp-server is a Model Context Protocol server for Excel file manipulation. A path traversal vulnerability exists in excel-mcp-server versions up to and including 0.1.7. When running in SSE or Streamable-HTTP transport mode the documented way to use this server remotely, an unauthenticated...

CVE-2026-40576 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in excel-mcp-server

excel-mcp-server is a Model Context Protocol server for Excel file manipulation. A path traversal vulnerability exists in excel-mcp-server versions up to and including 0.1.7. When running in SSE or Streamable-HTTP transport mode the documented way to use this server remotely, an unauthenticated...

CVE-2026-40576

CVE-2026-40576 summary (Excel-MCP Server) : A path-traversal flaw in excel-mcp-server (versions } } (Note: The response contains the required JSON object with the concise, fact-grounded insight in Markdown.) Wait: The above seems malformed. Need only a single JSON object with insight string. Let'...

CVE-2026-40576 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in excel-mcp-server

excel-mcp-server is a Model Context Protocol server for Excel file manipulation. A path traversal vulnerability exists in excel-mcp-server versions up to and including 0.1.7. When running in SSE or Streamable-HTTP transport mode the documented way to use this server remotely, an unauthenticated...

WordPress Royal MCP plugin <= 1.4.2 - Broken Access Control vulnerability

Broken Access Control vulnerability discovered by Alexis Lafontaine in WordPress Plugin Royal MCP versions = 1.4.2...

Next AI Draw.io 安全漏洞

Next AI Draw.io is an AI-driven online chart drawing tool developed by Dayuan Jiang. Versions of Next AI Draw.io prior to 0.4.15 contained security vulnerabilities. These vulnerabilities stemmed from the lack of size restrictions during request processing, which could lead to exhaustion of heap...