CVE-2026-75149

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 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.

Affected Software

Weaknesses

• CWE-94: Improper Control of Generation of Code ('Code Injection')

References

• https://github.com/marimo-team/marimo/releases/tag/0.23.15
• https://github.com/marimo-team/marimo/pull/10281
• https://github.com/marimo-team/marimo/commit/1a21bd71e258438d2511136b5edacc94c08855f4
• https://www.vulncheck.com/advisories/marimo-code-injection-via-mcp-server-configuration

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