OpenSSF/OSV advisory MAL-2026-14537 confirms this npm version as malicious. The package declares a preinstall lifecycle script (`node index.js`) that runs automatically on `npm install`. index.js collects the installer's hostname, OS username, home directory, configured DNS servers, package metadata, and the contents of /etc/passwd and /etc/hosts, then POSTs the payload over HTTPS to dfwvktnc563cparn1p88c8051w7ovej3.oastify.com, a Burp Collaborator out-of-band host controlled by a third...
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in octopus-action (npm)
Details
The package declares a preinstall lifecycle script (`node index.js`) that runs automatically on `npm install`. index.js collects the installer's hostname, OS username, home directory, configured DNS servers, package metadata, and the contents of /etc/passwd and /etc/hosts, then POSTs the payload over HTTPS to dfwvktnc563cparn1p88c8051w7ovej3.oastify.com, a Burp Collaborator out-of-band host controlled by a third party. Installing the package causes installer host identifiers and system files to be exfiltrated to that endpoint.
Decision reason
OpenSSF Malicious Packages via OSV confirms octopus-action@1.0.1 as malicious (MAL-2026-14537): Malicious code in octopus-action (npm)