marimo-team marimo up to 0.23.14 Notebook Configuration code injection

Summaryinfo

A vulnerability was found in marimo-team marimo up to 0.23.14 and classified as critical. The affected element is an unknown function of the component Notebook Configuration Handler. Such manipulation leads to code injection. This vulnerability is listed as CVE-2026-75149. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in marimo-team marimo up to 0.23.14 and classified as critical. Affected by this issue is an unknown code of the component Notebook Configuration Handler. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-75149 since 08/17/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1059 by the MITRE ATT&CK project.

Upgrading to version 0.23.15 eliminates this vulnerability.

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Productinfo

Vendor

• marimo-team

Name

• marimo

Version

• 0.23.0
• 0.23.1
• 0.23.2
• 0.23.3
• 0.23.4
• 0.23.5
• 0.23.6
• 0.23.7
• 0.23.8
• 0.23.9
• 0.23.10
• 0.23.11
• 0.23.12
• 0.23.13
• 0.23.14

Website

• Product: https://github.com/marimo-team/marimo/

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