vybscan-testbed-inert-postinstall (npm) · Malicious Code
Affects vybscan-testbed-inert-postinstallSource GCVE Database
Malicious package : remove vybscan-testbed-inert-postinstall and rotate any secrets on hosts that installed it.
Data as of 26 Oct 2026, 15:56 UTC
Malicious package
Published to npm · OSV MAL-2026-10078
What to do
Remove vybscan-testbed-inert-postinstall 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 |
|---|---|---|
| npmvybscan-testbed-inert-postinstall | Affected
| Fixed in– |
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Description
The npm package 'vybscan-testbed-inert-postinstall' version 1.0.0 contains malicious code in its postinstall script. This script executes automatically during 'npm install' and collects the host's user identity and environment variables, which often include sensitive credentials and tokens. The collected data is then sent to an attacker-controlled remote endpoint without user consent or interaction.