vuln-package (npm) · Malicious Code
Affects vuln-packageSource GCVE Database
Malicious package : remove vuln-package and rotate any secrets on hosts that installed it.
Data as of 13 Jul 2026, 09:57 UTC
Malicious package
Published to npm · OSV MAL-2026-10212
What to do
Remove vuln-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 |
|---|---|---|
| npmvuln-package | Affected
| Fixed in– |
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Description
The npm package 'vuln-package' versions 99.9.9, 99.9.10, 99.9.11, and 99.9.14 contain malicious code that executes during installation. The package's preinstall script performs a DNS lookup to a unique subdomain of oast.fun, confirming code execution on the installer's machine. Additionally, a sibling script collects host identifiers such as username, hostname, current working directory, and environment variables, then exfiltrates this data via an HTTPS POST request to a hardcoded webhook.site endpoint. This behavior indicates a supply-chain reconnaissance and data exfiltration attack rather than legitimate package functionality.