High
marimo < 0.23.15 Code Injection via MCP Server Configuration
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-75149
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 04:30 UTC · Revision 1
Source evidence
marimo < 0.23.15 Code Injection via MCP Server Configuration
core-osv · Original sourcePublished 19 Aug 2026, 17:48 UTC
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.
osv:CVE-2026-75149
Complete source record
{
"id": "6cc96f5a4d471199fab79a95dbd46f7e686838930d0676a6c85f9a0270e54e5e",
"url": "https://osv.dev/vulnerability/CVE-2026-75149",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "marimo < 0.23.15 Code Injection via MCP Server Configuration",
"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.",
"evidence": "osv:CVE-2026-75149",
"products": [],
"severity": "high",
"structured": {
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"aliases": [
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"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
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],
"modified": "2026-10-28T02:30:25.988397413Z",
"provider": "osv",
"references": [
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"https://github.com/marimo-team/marimo/releases/tag/0.23.15",
"https://nvd.nist.gov/vuln/detail/CVE-2026-75149",
"https://www.vulncheck.com/advisories/marimo-code-injection-via-mcp-server-configuration",
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}
},
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"evidence": "/id"
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},
"source_id": "core-osv",
"document_id": 492470,
"published_at": "2026-08-19T17:48:46.525+00:00"
}