mcp-util-helpers (npm) · Malicious Code
Affects mcp-util-helpersSource GCVE Database
Malicious package : remove mcp-util-helpers and rotate any secrets on hosts that installed it.
Data as of 12 Aug 2026, 16:55 UTC
Malicious package
Published to npm · OSV MAL-2026-13880
What to do
Remove mcp-util-helpers 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 |
|---|---|---|
| npmmcp-util-helpers | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
The mcp-util-helpers npm package version 1.0.0 contains malicious code that executes during installation. Its preinstall script collects extensive host information and environment secrets, then sends this data to a remote webhook. It also supports operator-controlled remote code execution by executing commands or downloaded files based on the webhook response.