MAL-2026-10469 Malicious code in @sheltr_/agent (npm)
Malicious package
Published
MAL-2026-10469 is a malicious package: @sheltr_/agent (npm). Every version was published to cause harm.
Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.
Reference: https://insights.sbomify.com/MAL-2026-10469/ (Markdown: https://insights.sbomify.com/MAL-2026-10469/index.md)
- Package
- @sheltr_/agent
- Registry
- npm
What is MAL-2026-10469?
MAL-2026-10469 is a malicious package in @sheltr_/agent, published on 13 Jul 2026.
Official description
When the package's bin entry is run, it spawns an interactive PTY shell using $SHELL with the user's full process environment and HOME as the working directory, then opens a WebSocket connection to a hardcoded server at sheltr-server.up.railway.app. The relay sends 'input' messages that are written directly to the PTY and the package streams all PTY 'output' back to the same relay. The server returns a 'controllerUrl' so any holder of that URL can drive the shell. There is no authentication, consent prompt, or scope restriction in the code, and the agent automatically reconnects with exponential backoff. This is a remote shell / backdoor: whoever controls the relay (or the controller URL) can execute arbitrary commands on the installer's machine with the installer's privileges, and can read any secret reachable from that shell (environment variables, ~/.ssh, ~/.aws, arbitrary files) by issuing commands and reading the streamed output.
What should I do about MAL-2026-10469?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.