---
id: CVE-2026-75149
title: >-
  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
  emb…
summary: >-
  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
  emb…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-94
published: '2026-08-19'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T13:42:44.883'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-75149'
references:
  - url: >-
      https://github.com/marimo-team/marimo/commit/1a21bd71e258438d2511136b5edacc94c08855f4
    label: disclosure@vulncheck.com
  - url: 'https://github.com/marimo-team/marimo/pull/10281'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/marimo-team/marimo/releases/tag/0.23.15'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/marimo-code-injection-via-mcp-server-configuration
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00637
epssPercentile: 0.4913
ingestedAt: '2026-09-16T13:56:12.593Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.