CVE-2026-75149
marimo < 0.23.15 Code Injection via MCP Server Configuration
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-94 |
| Vendor | marimo-team |
| Product | marimo |
| Published | Aug 19, 2026 |
Stay Ahead of the Next One
Get instant alerts for marimo-team marimo
Be the first to know when new high vulnerabilities affecting marimo-team marimo are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
marimo-team / marimo
0 < 0.23.15
References
github.com: https://github.com/marimo-team/marimo/releases/tag/0.23.15 github.com: https://github.com/marimo-team/marimo/pull/10281 github.com: https://github.com/marimo-team/marimo/commit/1a21bd71e258438d2511136b5edacc94c08855f4 vulncheck.com: https://www.vulncheck.com/advisories/marimo-code-injection-via-mcp-server-configuration
Credits
Gregory Tan (Grg0rry)