tetomood

GHSA-wwxg-wcx2-44fm

Malicious code in tetomood (npm)

Details

**Severity:** Critical

**Affected versions:** `= 12.0.0`

## Source: amazon-inspector (6c09686feb7c38e815ef9a615a6ceba2444029a34ea9d6bee8598a76bc8e8f92)
package.json declares both preinstall and postinstall scripts that invoke wget to POST the installer's current working directory ($(pwd)) and machine hostname ($(hostname)) to a hardcoded Discord webhook endpoint on discord.com at install time. The tarball ships only package.json (611 bytes); the declared main entry index.js is absent, so the package has no legitimate functionality — the lifecycle beacons are its sole purpose. Installing the package causes automatic host reconnaissance data to be sent to an author-controlled remote endpoint without consent.

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/7f1aa138541a03139444da6ce5a68c006904fd72/osv/malicious/npm/tetomood/MAL-2026-16216.json))

**References:**
- https://github.com/ossf/malicious-packages/blob/7f1aa138541a03139444da6ce5a68c006904fd72/osv/malicious/npm/tetomood/MAL-2026-16216.json
- https://www.npmjs.com/package/tetomood/v/12.0.0
- https://github.com/advisories/GHSA-wwxg-wcx2-44fm

Compromised versions (1)

= 12.0.0

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.