sensorium-mcpnpm
Advisory published Updated
sensorium-mcp is a confirmed malicious npm package (MAL-2026-10747) that steals credentials and exfiltrates sensitive data (malicious version 3.0.95). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in sensorium-mcp (npm)
What this malware does
sensorium-mcp starts a background poller against api.telegram.org/getUpdates and delivers received message text as prompts to locally spawned Claude Code (invoked with --dangerously-skip-permissions) and Codex (invoked with --dangerously-bypass-approvals-and-sandbox). Because the agents' approval/sandbox prompts are disabled by the package, any party holding the Telegram bot token and chat id can issue instructions that execute as shell and file operations on the installer's host. The keepAlive threads auto-launch when the server is started. In addition, the MCP send_file tool accepts any absolute path inside the installer's cwd or home directory, reads the file, and uploads it to the configured Telegram chat via telegram.sendDocument, exposing paths such as ~/.ssh/id_rsa, ~/.aws/credentials, and ~/.npmrc to whoever controls the bot. The ping-related patterns flagged in dist/http-server.js and dist/services/self-update.service.js are health-check / keepalive references and are not the primary basis for this verdict.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for sensorium-mcp (version 3.0.95).
If you installed it — respond
sensorium-mcp 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 sensorium-mcp 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
- Amazon Inspector · finder
Detect & block this
O3 blocks sensorium-mcp-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.