Marimo Notebook Flaw Could Run MCP Commands Before Cells Execute in Edit Mode

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...

EUVD-2026-62665

marimo before 0.23.15 contains a code injection vulnerability in the notebook configuration handler that allows attackers to execute arbitrary commands by supplying a crafted MCP server entry with an attacker-controlled command value embedded in a notebook. When the notebook is opened in edit mod...

CVE-2026-75149 marimo < 0.23.15 Code Injection via MCP Server Configuration

marimo before 0.23.15 contains a code injection vulnerability in the notebook configuration handler that allows attackers to execute arbitrary commands by supplying a crafted MCP server entry with an attacker-controlled command value embedded in a notebook. When the notebook is opened in edit mod...

CVE-2026-75149: Improper Control of Generation of Code

marimo before 0.23.15 contains a code injection vulnerability in the notebook configuration handler that allows attackers to execute arbitrary commands by supplying a crafted MCP server entry with an attacker-controlled command value embedded in a notebook. When the notebook is opened in edit mod...