block_package (npm) · Malicious Code
Affects block_packageSource GCVE Database
Malicious package : remove block_package and rotate any secrets on hosts that installed it.
Data as of 5 Aug 2026, 17:38 UTC
Malicious package
Published to npm · OSV MAL-2026-12340
What to do
Remove block_package 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 |
|---|---|---|
| npmblock_package | Affected
| Fixed in– |
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Description
The npm package 'block_package' version 1.0.0 contains malicious code in its postinstall script. This script automatically downloads and executes an MSI installer from an untrusted HTTP source without verification, allowing arbitrary code execution on the installing machine.