checkout-parameters (npm) · Malicious Code
Affects checkout-parametersSource GCVE Database
Malicious package : remove checkout-parameters and rotate any secrets on hosts that installed it.
Data as of 5 Aug 2026, 16:03 UTC
Malicious package
Published to npm · OSV MAL-2026-12583
What to do
Remove checkout-parameters 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-parameters | Affected
| Fixed in– |
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Description
The npm package 'checkout-parameters' version 35.8.5 contains malicious code that downloads and executes a platform-specific native binary from obfuscated hosts during installation or require. The payload is saved to hidden paths on the host system, given executable permissions, and launched detached, enabling arbitrary code execution. The package uses evasion techniques such as runtime hostname reconstruction and obfuscated code to avoid detection. A sibling module mimics an analytics SDK but performs similar malicious actions. This results in arbitrary attacker-controlled code execution on the installer's machine.