mcp-runcommand-serverPyPI
Advisory published Updated
mcp-runcommand-server is a confirmed malicious PyPI package (MAL-2025-191647) that steals credentials and exfiltrates sensitive data (malicious versions 1.0.5, 1.0.7, 1.0.8…). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in mcp-runcommand-server (PyPI)
What this malware does
Package starts a reverse shell to a hardcoded location
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2025-10-mcp-runcommand-server
Reasons (based on the campaign):
- The package contains code to create a reverse shell, allowing an attacker to execute any commands on the victim's machine.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for mcp-runcommand-server (8 malicious versions).
If you installed it — respond
mcp-runcommand-server is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If mcp-runcommand-server was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.
Frequently asked questions
Campaign
References
Credits
- Kamil Mańkowski (kam193)
- ReversingLabs · finder
Detect & block this
O3 blocks mcp-runcommand-server-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.