solidity-cat (npm) · Malicious Code
Affects solidity-catSource GCVE Database
Malicious package : remove solidity-cat and rotate any secrets on hosts that installed it.
Data as of 13 Nov 2026, 05:28 UTC
Malicious package
Published to npm · OSV MAL-2026-18694
What to do
Remove solidity-cat 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 |
|---|---|---|
| npmsolidity-cat | Affected
| Fixed in– |
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Description
The solidity-cat npm package contains malicious code that executes arbitrary code on the installer's machine by requiring and evaluating a file outside its package directory. It masquerades as a Solidity/Hardhat logger but includes unrelated code and a path traversal that loads a potentially attacker-controlled module from the installer's project tree. This behavior occurs silently on import or install without user awareness.