{
  "id": 3274369,
  "title": "Marimo Notebook Flaw Could Run MCP Commands Before Cells Execute in Edit Mode",
  "url": "https://urgent.news/2026/08/25/marimo-notebook-flaw-could-run-mcp-commands-before-cells-execute-in",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-08-25T12:43:51.000Z",
  "source": {
    "name": "The Hacker News",
    "slug": "the-hacker-news",
    "url": "https://thehackernews.com/2026/08/marimo-notebook-flaw-could-run-mcp.html"
  },
  "original_language": "en",
  "account": null,
  "summary": "Marimo has addressed a high-severity security flaw in its notebook software that allowed an attacker to execute an attacker-supplied Model Context Protocol (MCP) command in a specially crafted notebook, according to VulnCheck's CVE Numbering Authority (CNA) record. The CNA record says the command can run as a local subprocess when the notebook is opened in edit mode. The vulnerability, tracked",
  "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."
}