Vulnerability Intelligence Report
marimo < 0.23.15 Code Injection via MCP Server Configuration
CVE-2026-75149
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.
No Active Exploit Signals
CVSS Base Score
8.7
HIGH
EPSS Probability:0.64%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-94 ↗Improper Control of Generation of Code ('Code Injection')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| marimo-team | marimo | 0 < 0.23.15 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.637%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | VulnCheck · Bug Bounty Provider · USA |
| Reserved | 2026-08-17T18:39:57 |
| Published | 2026-08-19T17:48:46 |
| Patch Date | 2026-08-19 |
| Last Updated | 2026-08-21T19:41:11 |
Community Chatter & Buzz