MCP-for-Stata: Stata Command Injection via Unsanitized `package` in `ado_package_install` (CVE-2026-55071) | HOL Guard CVE

High · CVSS 8.4CVE-2026-55071GHSA-49M4-VP58-WGC9

MCP-for-Stata: Stata Command Injection via Unsanitized `package` in `ado_package_install`

Answer in brief

CVE-2026-55071 records a High severity (CVSS 8.4) vulnerability in MCP-for-Stata: Stata Command Injection via Unsanitized `package` in `ado_package_install`. The current sources do not mark it as known exploited. The current feed maps SepineTam/mcp-for-stata (generic), stata-mcp (pip), stata-mcp (pypi). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 21, 2026Updated Sep 21, 2026Source checked Sep 21, 2026First seen by HOL Aug 12, 2026Material review Sep 21, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.4
Exploitation: Not marked as known exploited
Affected software: 3 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 8.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps SepineTam/mcp-for-stata (generic), stata-mcp (pip), stata-mcp (pypi). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
SepineTam/mcp-for-statageneric	< 1.19.0	Not reported
stata-mcppip	<1.19.0	1.19.0
stata-mcppypi	>=0 <1.19.0	1.19.0

Recommended response

Check inventory. Check lockfiles and deployed manifests for SepineTam/mcp-for-stata, stata-mcp, stata-mcp.
Review the reported fix. Update stata-mcp to 1.19.0; stata-mcp to 1.19.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 21, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 21, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 12, 2026

Sources and claim methodology

Upstream source description

MCP-for-Stata is a MCP server for integrating Stata into agent loops with a safety-first design. Prior to version 1.19.0, the ado_package_install MCP tool in stata-mcp concatenates user-controlled input directly into a Stata command string without any validation or sanitization. An attacker who can invoke the MCP tool or the equivalent Python API can embed newline characters in the package argument to inject arbitrary Stata commands. Because Stata supports a shell escape command, this leads to full OS-level arbitrary command execution (RCE) under the account running the Stata-MCP server. The tool is registered in the default all profile, so no non-default configuration is required. This issue has been patched in version 1.19.0.

Quoted source text, attributed separately from HOL analysis.