bigops-legacy-utils (npm) · Malicious Code
Affects bigops-legacy-utilsSource GCVE Database
Malicious package : remove bigops-legacy-utils and rotate any secrets on hosts that installed it.
Data as of 5 Aug 2026, 22:47 UTC
Malicious package
Published to npm · OSV MAL-2026-13222
What to do
Remove bigops-legacy-utils 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 |
|---|---|---|
| npmbigops-legacy-utils | Affected
| Fixed in– |
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Description
The npm package bigops-legacy-utils version 35.2.6 contains malicious code that, when required, downloads and executes a platform-specific binary payload from hardcoded external domains. The payload is saved to temporary directories under disguised filenames and executed detached from the main process. The code attempts to evade detection by reconstructing hostnames from string fragments and suppresses execution if certain environment variables indicating telemetry opt-out are set. This behavior is disguised as 'polyfill' or 'analytics' functionality.