checkout-base-analytics-data (npm) · Malicious Code
Affects checkout-base-analytics-dataSource GCVE Database
Malicious package : remove checkout-base-analytics-data and rotate any secrets on hosts that installed it.
Data as of 5 Aug 2026, 15:49 UTC
Malicious package
Published to npm · OSV MAL-2026-12543
What to do
Remove checkout-base-analytics-data 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 |
|---|---|---|
| npmcheckout-base-analytics-data | Affected
| Fixed in– |
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Description
The npm package 'checkout-base-analytics-data' version 35.9.1 contains malicious code that, upon requiring its main module, executes a hidden bootstrap routine. This routine downloads an unverified native binary from dynamically assembled and obfuscated worker.dev and wel1.ru subdomains, writes it to temporary directories with disguised filenames, sets executable permissions, and spawns it detached. The package's declared purpose and lack of dependencies do not align with this behavior, indicating malicious intent.