@gsas/gsas-sdk

Details

**Severity:** Critical

**Affected versions:** `= 999.9.15`

## Source: amazon-inspector (2242b683433d5fe37b3997185d251799a4606a456e516da08586775d11f0cb7e)
@gsas/[email protected] is a high-version public-registry squat targeting an internal `@gsas/gsas-sdk` name. package.json declares `preinstall: node index.js`, and index.js runs on install to collect the installer's hostname, username, home directory, cwd, local/public/resolver IPs, npm registry URL, CI platform with repo/actor/run/workflow/runner, AWS region, git email domain, and the consuming project's name/author/repo/homepage. It also spawns `gh api user --jq.login`, `npm whoami`, and `git config user.email` to capture the developer's authenticated GitHub login, npm login, and email. The collected JSON is hex-encoded, split into 60-character chunks emitted as DNS subdomain queries under `da51rv0hb2uc72tg4gvgdepinjcallbk1.oast.fun`, and additionally POSTed over HTTP and HTTPS to the same host (path `/poc/<uuid>`). Public-IP discovery calls out to api.ipify.org, icanhazip.com, and ifconfig.me. Comments in the file describe the multi-channel design as intended to survive corporate egress filtering. An `AUTHORISED SECURITY RESEARCH` self-label appears in the source but does not correspond to installer consent.

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/72e5d8219b286d7332c4ad2364b87986138cf34c/osv/malicious/npm/@gsas/gsas-sdk/MAL-2026-14420.json))

**References:**
- https://github.com/ossf/malicious-packages/blob/72e5d8219b286d7332c4ad2364b87986138cf34c/osv/malicious/npm/@gsas/gsas-sdk/MAL-2026-14420.json
- https://www.npmjs.com/package/@gsas/gsas-sdk/v/999.9.15
- https://github.com/advisories/GHSA-jc2j-48vr-vq2f

Compromised versions (1)

• = 999.9.15

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