Malicious code in hardhat-roof (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.

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (25cbf03ad6014824ab078237f83b2b682145928e5effefbe3dcc5deca9ba1e26) The package presents itself as the pino logger — README, docs/, index.d.ts and LICENSE are copied from pinojs/pino and keywords advertise 'fast, logger, stream, json' — but the package name is 'hardhat-roof', the description references unrelated vulnerability-management functionality, and the author points to jsonspack.com rather than the pino maintainers. The top of index.js executes `require('./lib/config')`, which loads lib/config.js: a 4,373,384-byte file containing obfuscator.io-style string-array obfuscation with a self-rotating decoder (`n['push'](n['shift']())` loop gated by a parseInt sum), hex-escaped character lookups, and dozens of single-letter indirection functions. The remaining lib/ files are small and consistent with pino; only config.js is the oversized opaque blob, and the real pino has no such file. Any consumer that imports or requires this package therefore executes several megabytes of opaque code in-process at load time. The combination of a doppelganger cover story cloned from a popular logger, a mismatched package name and author, and a reachable load-time execution path into a heavily obfuscated multi-megabyte payload is the shape of a trojanized typosquat/doppelganger delivering attacker-controlled code into installer processes.

Source published

4 Oct 2026 23:28:31 UTC

Source modified

4 Oct 2026 23:45:19 UTC

Observed here

24 Oct 2026 13:17:17 UTC

Source terms

OSV · upstream source license applies

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

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