OpenSSF/OSV advisory MAL-2026-6521 confirms this npm version as malicious. package.json declares a preinstall hook (`node index.js`) that runs unconditionally on `npm install`. index.js imports child_process/os/https, collects host identifiers (os.hostname, os.userInfo, platform, arch, homedir, cwd) and shells out to `whoami`/`id`, then POSTs the collected JSON to a hardcoded Burp Collaborator subdomain at https://pleq9pugrugzr4zgyymazmnq0h68u4it.oastify.com/detox56...
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in @carvana.authentication-flows/shared (npm)
Details
package.json declares a preinstall hook (`node index.js`) that runs unconditionally on `npm install`. index.js imports child_process/os/https, collects host identifiers (os.hostname, os.userInfo, platform, arch, homedir, cwd) and shells out to `whoami`/`id`, then POSTs the collected JSON to a hardcoded Burp Collaborator subdomain at https://pleq9pugrugzr4zgyymazmnq0h68u4it.oastify.com/detox56. The package name also impersonates the Carvana org by using a `.` in the scope (`@carvana.authentication-flows/shared`), making `carvana.authentication-flows` a fake top-level npm scope rather than a Carvana-owned namespace. There is no legitimate functionality shipped; the package's sole effect on install is reconnaissance exfiltration to an attacker-controlled out-of-band server.
Decision reason
OpenSSF Malicious Packages via OSV confirms @carvana.authentication-flows/shared@19.2.1 as malicious (MAL-2026-6521): Malicious code in @carvana.authentication-flows/shared (npm)