CVE-2025-66454 Arcade MCP Default Hardcoded Worker Secret Allows Full Unauthorized Access to All HTTP MCP Worker Endpoints

Arcade MCP allows you to to create, deploy, and share MCP Servers. Prior to 1.5.4, the arcade-mcp HTTP server uses a hardcoded default worker secret "dev" that is never validated or overridden during normal server startup. As a result, any unauthenticated attacker who knows this default key can...

CVE-2025-66454

The CVE-2025-66454 issue in arcade-mcp-server/arcade-mcp is a hardcoded default worker secret ("dev") used by the HTTP server. Prior to version 1.5.4, this secret is never validated/rotated during startup, enabling unauthenticated attackers who know the key to forge valid JWTs and bypass FastAPI ...

CVE-2025-66454 Arcade MCP Default Hardcoded Worker Secret Allows Full Unauthorized Access to All HTTP MCP Worker Endpoints

Arcade MCP allows you to to create, deploy, and share MCP Servers. Prior to 1.5.4, the arcade-mcp HTTP server uses a hardcoded default worker secret "dev" that is never validated or overridden during normal server startup. As a result, any unauthenticated attacker who knows this default key can...

EUVD-2025-200280

arcade-mcp-server Has Default Hardcoded Worker Secret That Allows Full Unauthorized Access to All HTTP MCP Worker Endpoints...

GHSA-G2JX-37X6-6438 arcade-mcp-server Has Default Hardcoded Worker Secret That Allows Full Unauthorized Access to All HTTP MCP Worker Endpoints

Summary The arcade-mcp HTTP server uses a hardcoded default worker secret "dev" that is never validated or overridden during normal server startup. As a result, any unauthenticated attacker who knows this default key can forge valid JWTs and fully bypass the FastAPI authentication layer. This...

1xn-vmcp (>=0.5.2 <=0.6.1), a2c-smcp (>=0.1.1rc0 <=0.1.5) +405 more potentially affected by CVE-2025-66416 via mcp (>=0.9.1 <=1.22.0)

mcp PYPI version =0.9.1, =0.5.2, =0.1.1rc0, =0.7.2, =1.1.0, =1.1.0, =1.0.0, =1.0.0, =0.4.0, =0.0.19, =1.0.0, =3.2.0, =3.2.0, =4.2.2, =4.3.3 and more Source cves: CVE-2025-66416 Source advisory: OSV:GHSA-9H52-P55H-VW2F...

1xn-vmcp (>=0.5.2 <=0.6.1), a2c-smcp (>=0.1.1rc0 <=0.1.5) +396 more potentially affected by CVE-2025-66416 via mcp (>=1.0.0 <=1.22.0)

mcp PYPI version =1.0.0, =0.5.2, =0.1.1rc0, =0.7.2, =1.1.0, =1.1.0, =1.0.0, =1.0.0, =0.4.0, =0.0.19, =1.0.0, =3.2.0, =3.2.0, =4.2.2, =4.3.3 and more Source cves: CVE-2025-66416 Source advisory: SNYK:PYTHON-MCP-14171912...

GHSA-W48Q-CV73-MX4W Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

The Model Context Protocol MCP TypeScript SDK does not enable DNS rebinding protection by default for HTTP-based servers. When an HTTP-based MCP server is run on localhost without authentication with StreamableHTTPServerTransport or SSEServerTransport and has not enabled...

CVE-2025-35028

By providing a command-line argument starting with a semi-colon ; to an API endpoint created by the EnhancedCommandExecutor class of the HexStrike AI MCP server, the resultant composed command is executed directly in the context of the MCP server’s normal privilege; typically, this is root. There...

Command Injection

Overview stata-mcp is a Let LLM help you achieve your regression analysis with Stata Affected versions of this package are vulnerable to Command Injection via the statado tool’s handling of Stata do-files. The server executes user-provided or LLM-generated do-files with subprocess.Popen...,...

Race Condition within a Thread

Overview mcp-mesh is a Kubernetes-native platform for distributed MCP applications Affected versions of this package are vulnerable to Race Condition within a Thread due to a Race Condition in Access Control. The agent shutdown process fails to atomically remove agents from the registry before...

Command Injection

Overview mcp-docker is a Model Context Protocol server for Docker management with AI assistants Affected versions of this package are vulnerable to Command Injection due to insufficient validation of list-format commands in the dockerexeccommand tool. The dockerexeccommand tool accepts a...

Incorrect Authorization

Overview agent-mcp-gateway is an An MCP gateway that aggregates your existing MCP servers and lets you define which servers and individual tools each agent or subagent can access. Solves Claude Code's MCP context window waste where all tool definitions load upfront instead of being discovered whe...

CVE-2025-66454

creationtimestamp| type| source ---|---|--- 2025-12-02 00:58:19+00:00| published-proof-of-concept| https://github.com/ArcadeAI/arcade-mcp/security/advisories/GHSA-g2jx-37x6-6438...

EUVD-2025-200116

MCP Watch has a Critical Command Injection in cloneRepo allows Remote Code Execution RCE via malicious URL...

This Week in Spring - December 2nd, 2025

Hi, Spring fans! Welcome to another installment of This Week in Spring. By mistake, I inadvertently published older content in this installment, then tried to fix it and ended up re-publishing the same content. And, what's worse, I somehow ended up deleting the draft I had written for this...

MCP TypeScript SDK 安全漏洞

MCP TypeScript SDK is a Model Context Protocol open source developer toolkit for Model Context Protocol servers and clients. A security vulnerability exists in MCP TypeScript SDK versions prior to 1.24.0 that stems from not enabling DNS rebinding protection by default, which could lead to bypassi...

CVE-2025-66401

MCP Watch vulnerability (CVE-2025-66401) affects MCPWatch

CVE-2025-66401 MCP Watch has a Critical Command Injection in cloneRepo allows Remote Code Execution (RCE) via malicious URL

MCP Watch is a comprehensive security scanner for Model Context Protocol MCP servers. In 0.1.2 and earlier, the MCPScanner class contains a critical Command Injection vulnerability in the cloneRepo method. The application passes the user-supplied githubUrl argument directly to a system shell via...

CVE-2025-66401 MCP Watch has a Critical Command Injection in cloneRepo allows Remote Code Execution (RCE) via malicious URL

MCP Watch is a comprehensive security scanner for Model Context Protocol MCP servers. In 0.1.2 and earlier, the MCPScanner class contains a critical Command Injection vulnerability in the cloneRepo method. The application passes the user-supplied githubUrl argument directly to a system shell via...