{
  "id": 18803974,
  "title": "Five MCP security scanners on the same tool definitions",
  "url": "https://urgent.news/2026/11/07/five-mcp-security-scanners-on-the-same-tool-definitions",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-11-07T22:35:45.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/alexar76/five-mcp-security-scanners-on-the-same-tool-definitions-5gmp"
  },
  "original_language": "en",
  "account": "The comparison of five MCP security scanners reveals that WARDEN, a tool maintained by the reporter, produced high/critical signals on 460 out of 485 served MCPTox definitions, while the remaining four scanners produced between 1 and 56 such signals. WARDEN's historical packages also generated thousands of advisory-only signals. The comparison focuses on the published packages, verified against the registry, and includes their respective versions, package names, and SHA-256 hashes. The reported findings highlight differences in how each scanner handles various signals and policy settings, emphasizing the importance of considering all signal types rather than just high/critical ones.",
  "summary": "An MCP tool description can tell an assistant to change another tool's arguments, read a local file before answering, or hide an extra action. A useful scanner comparison needs to show which malicious definitions receive a signal, what happens on benign definitions, and which targets never receive a complete result. I maintain both WARDEN and HISTOR , which supplies the historical package…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}