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Vulnerabilities CVE-2026-75149

CVE-2026-75149

High
Open
TLP:CLEAR

marimo < 0.23.15 Code Injection via MCP Server Configuration

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Description

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 mode, marimo launches the specified command as a local subprocess before any notebook cell is executed, requiring no authentication or cell execution to trigger the vulnerability.

Details

CVSS Score
8.7
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Confidence
90%
Published
Aug 19, 2026
Last Modified
Aug 19, 2026
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