Code Injection in stata-mcp (CVE-2026-55071)
Summary
Code injection in stata-mcp (CVE-2026-55071). Successful exploitation can lead to full system takeover. Exploitable via package. Mitigation: upgrade to 1.19.0 or later.
Original description
The description as published by the source.
Stata Command Injection via Unsanitized package in ado_package_install
Summary
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. Base CVSS score is 8.4 (High).
Details
The vulnerability originates in SSC_Install.install():
# src/stata_mcp/stata/builtin_tools/ado_install/ssc_install.py:14-16
def install(self, package: str) -> str:
install_command = f"ssc install {package}{self.REPLACE_MESSAGE}"
runner_result = self.controller.run(install_command)
The package parameter is interpolated into an f-string with no allowlist check, newline rejection, or quoting. The resulting command string is forwarded to the Stata interpreter verbatim:
# src/stata_mcp/stata/stata_controller/controller.py:98-99
# Send the command
self.child.sendline(command)
pexpect.sendline() writes the full multi-line string to the Stata REPL, which executes each line as a separate Stata command. Because Stata's shell (and `!…
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-55071 has been found in stata-mcp.
Attackers can target a specific entry point like package over the network to misuse the product.
Successful exploitation can lead to full system takeover. CVSS score: 8.4/10.
What to do: upgrade stata-mcp to 1.19.0 or later.
If unsure, ask your IT team or search "stata-mcp CVE-2026-55071" on the vendor's site.
CVE-2026-55071 (stata-mcp) — CWE-94 / CVSS v3 8.4
Attack vector: local / unauthenticated / no user interaction
Attack surface: package / ado_package_install / shell / all
Patched: 1.19.0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Arbitrary code execution (CWE-94) exists in stata-mcp. Attackers reach the vulnerable code path via package without authentication.
Check the vendor advisory for the affected versions of stata-mcp. Attack surface: package / ado_package_install / shell / all.
Severity: High (CVSS 8.4/10). Successful exploitation can lead to full system takeover.
Update to 1.19.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'stata-mcp' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'stata-mcp' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
stata-mcpを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade stata-mcp to 1.19.0ステージング環境で 1.19.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory nvd.nist.gov
- package github.com
- package pypi.org
- web github.com
- web github.com