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 (e24f6c700225d22dcccdf1af7bb58c7628366ccc59b864431af5123909b42626)
package.json's preinstall hook runs index.js, which collects hostname, username, home directory, DNS servers, and current working directory, reads /etc/passwd and /etc/hosts, and HTTPS-POSTs the JSON payload to a hardcoded Burp Collaborator (oastify.com) subdomain. The exfiltration fires automatically on npm install without any user interaction, and targets installer-side system identity and account data.
Source: ghsa-malware (e043a7baa55d15e554e0043a67f74acddbcf0e5ca437783bb551b6b0a4458b65)
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.