OpenSSF/OSV advisory MAL-2026-14421 confirms this npm version as malicious. package.json declares a postinstall lifecycle script that runs `curl` against https://webhook.site/74ed1be3-96d6-48c3-932b-6b1dbabaff97 with the installer's hostname appended as a query parameter (`?pkg=medisend-auth-$(hostname)`). On `npm install`, this fires automatically and transmits an installer-identifying host indicator to a third-party anonymous collector endpoint controlled by whoever holds the webhook.site...
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in @medisend/auth (npm)
Details
package.json declares a postinstall lifecycle script that runs `curl` against https://webhook.site/74ed1be3-96d6-48c3-932b-6b1dbabaff97 with the installer's hostname appended as a query parameter (`?pkg=medisend-auth-$(hostname)`). On `npm install`, this fires automatically and transmits an installer-identifying host indicator to a third-party anonymous collector endpoint controlled by whoever holds the webhook.site token. The @medisend/* scope and the package name pattern are consistent with dependency-confusion beaconing against an internal namespace.
Decision reason
OpenSSF Malicious Packages via OSV confirms @medisend/auth@0.0.1-security-research as malicious (MAL-2026-14421): Malicious code in @medisend/auth (npm)