If this package is installed
Remove it, treat the machine (or CI runner) as compromised, and rotate every secret, token and key it could access — from a different, clean machine.
Details
Source: amazon-inspector (cce50db3ac46a97bd27f546d029617582b37a2ead027509b0bea35370e47d2bd)
package.json declares a preinstall hook that runs index.js on npm install. The script collects hostname, username, home directory, DNS servers, current working directory, and the contents of /etc/passwd and /etc/hosts, then POSTs the collected data over HTTPS to the hardcoded subdomain ltivq9rn7t7gkxho4o1micsk6bc20uoj.oastify.com (a Burp Collaborator out-of-band interaction host). The behavior fires automatically as part of a default install and matches an installer-side host reconnaissance and system-file exfiltration pattern; the package's stated purpose (a passkeys React helper) does not require reading /etc/passwd, /etc/hosts, or contacting an OAST endpoint.
Source: ghsa-malware (3ebca4e66350a1d6fa7bd07f7561fb0ca4cfb7408f1c86647b6a5f1199f7a160)
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.