hardhat-zet (npm) · Malicious Code
Affects hardhat-zetSource GCVE Database
Malicious package : remove hardhat-zet and rotate any secrets on hosts that installed it.
Data as of 3 Oct 2026, 17:20 UTC
Malicious package
Published to npm · OSV MAL-2026-17234
What to do
Remove hardhat-zet from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| npmhardhat-zet | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (37cd33c0908189c0085fba153be1c42776411968aa5ad652dd7ffdef88b318bc) hardhat-zet@2.0.1 is published under a name that impersonates the Hardhat Ethereum tooling ecosystem, but its README, type definitions and docs/ tree are copied verbatim from the unrelated `pino` logger project (badges and links point at npmjs.com/package/pino and github.com/pinojs/pino). The exported `middleware` in index.js is a no-op Express middleware and matches neither the `hardhat-zet` name nor the pino README. The package's declared main (index.js) top-level-requires./lib/config, which is not a configuration file but a 4,498,609-byte obfuscator.io-style bundle: a 26,113-entry rotated string array behind two runtime decoders (functions v and F), hex-encoded identifiers, and control-flow flattening. All strings and destination URLs are hidden behind the decoders, so this code runs automatically on any `require('hardhat-zet')` and its behavior is not observable without deobfuscation. Publisher metadata (author 'Robert King <hello@jsonspack.com>', bugs URL https://jsonspack.com/issues) ties to neither the Hardhat nor the pino identity. The combination — ecosystem-typosquat name targeting crypto/Hardhat developers, cover-story README lifted from an unrelated popular package, no-op public API, and a multi-megabyte obfuscated payload auto-executed on import — is the shape of a supply-chain stealer aimed at Ethereum developers. ## Source: ghsa-malware (781273d2c802d3781fecccd4434ba418c93ce88edf920b2a1163dbacf7576254) Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.