gunzip-js (npm) · Malicious Code
Affects gunzip-jsSource GCVE Database
Malicious package : remove gunzip-js and rotate any secrets on hosts that installed it.
Data as of 26 Oct 2026, 16:17 UTC
Malicious package
Published to npm · OSV MAL-2026-14056
What to do
Remove gunzip-js 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 |
|---|---|---|
| npmgunzip-js | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
The npm package 'gunzip-js' version 99.9.1 is a malicious typosquatting package that pulls attacker-controlled code from an unaudited external source. It declares a dependency as an HTTPS tarball URL hosted on an anonymous Google Cloud Storage bucket, which is not associated with any known publisher. Installing this package results in downloading and executing potentially malicious code from this external source. The package itself is near-empty and serves only to facilitate this unauthorized code execution.