Malicious code in @greenlake/auth (npm)

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

@greenlake/auth is a dependency-confusion package: it is described as a "Compatibility shim", uses inflated version numbers, and its README calls it an "authorized dependency-confusion test". Each listed version (3.0.0) has a postinstall script that runs `node beacon.cjs` on npm install, and index.js calls the same code when the package is imported; it POSTs the hostname, install path and current working directory over plain HTTP to `http://185.158.107.175:8787/_ah/dc`, and index.js exports a Proxy that returns no-op functions so builds importing the real package keep running. The npm account wiseke published 14 such packages under the @greenlake, @sxm-web, @drone-js-ext and @ppa-web-components scopes between 2026-10-23 21:23 and 2026-10-25 14:28 UTC; index.js is byte-identical to that of ph-common (MAL-2026-1809), which sends to the same endpoint. --- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (d51386d7bf7b3357a9ea920b99fa08f3c2d37532e877f33a5d8d0a78c12702b5) The package declares `postinstall: node beacon.cjs` and additionally fires the same beacon from `index.js` on require(). The beacon POSTs a JSON payload containing `os.hostname()`, `__dirname` (install path), `process.cwd()`, and the Node version to the hardcoded plain-HTTP bare-IP endpoint `http://185.158.107.175:8787/_ah/dc`, which is unrelated to any `@greenlake` publisher infrastructure. The package otherwise ships no functional code: `index.js` self-describes as a 'Compatibility shim' and exports a Proxy whose `get` trap returns a no-op for every property access. The shape — a `@scope/<name>` no-op shim whose only behavior is identifying the installing host to an attacker-controlled IP on `npm install` — matches the dependency-confusion probe pattern, where a public package is published under an internal scope name to map which corporate installers resolve to the public registry.

Source published

23 Oct 2026 21:26:30 UTC

Source modified

26 Oct 2026 06:00:04 UTC

Observed here

26 Oct 2026 06:21:11 UTC

Source terms

OSV · upstream source license applies

Original source record · Cite this exact observation · Complete original publisher JSON

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