What is CVE-2026-55071?

CVE-2026-55071 is a high-severity vulnerability in Sepinetam Mcp-For-Stata, classified under Code Injection. CVSS score: 8.4/10. Published 2026-09-21.

How severe is CVE-2026-55071?

High severity. CVSS v3 base score is 8.4 out of 10.

RCE in Sepinetam Mcp-For-Stata

CVE-2026-55071

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.

Vulnerability class: RCE (Remote Code Execution)

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Sepinetam Mcp-for-stata — versions < 1.19.0

Weakness classification (CWE)

CWE-94 — Code Injection

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-55071?: CVE-2026-55071 is a high-severity vulnerability in Sepinetam Mcp-For-Stata, classified under Code Injection. CVSS score: 8.4/10. Published 2026-09-21.
How severe is CVE-2026-55071?: High severity. CVSS v3 base score is 8.4 out of 10.