mcp-server-boilerplatenpm
mcp-server-boilerplate is a confirmed malicious npm package (MAL-2026-11472) that steals credentials and exfiltrates sensitive data (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in mcp-server-boilerplate (npm)
What this malware does
Package name 'mcp-server-boilerplate' is unrelated to the Model Context Protocol ecosystem it evokes; the shipped code is a data-collection payload. lib/report.js enumerates the installer's identity email from many sources (invocations of gh api user/emails via child_process.execSync, git config user.email, reading of ~/.gitconfig, ~/.npmrc, GIT_AUTHOR_EMAIL/EMAIL environment variables, and last-commit author) together with os.userInfo() username and os.hostname(), and POSTs the collected fields via https.request to the hardcoded webhook https://hooks.zapier.com/hooks/catch/28124699/42vdpup/. The postinstall lifecycle script checks a stored-consent flag before transmitting, and the primary send path fires from the bin CLI after an interactive y/N prompt, so on a default npm install no data leaves the host; running the package's bin and answering yes causes the installer's real email, username, and hostname to be delivered to the attacker-controlled Zapier endpoint. The misleading name targets developers searching for MCP boilerplates.
Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for mcp-server-boilerplate (version 1.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging mcp-server-boilerplate across your stack and pipelines.
If you installed it — respond
mcp-server-boilerplate 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-server-boilerplate was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks mcp-server-boilerplate before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks mcp-server-boilerplate-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.