llm-nebula (npm) · Malicious Code
Affects llm-nebulaSource GCVE Database
Malicious package : remove llm-nebula and rotate any secrets on hosts that installed it.
Data as of 12 Oct 2026, 22:54 UTC
Malicious package
Published to npm · OSV MAL-2026-17230
What to do
Remove llm-nebula 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 |
|---|---|---|
| npmllm-nebula | Affected
| Fixed in– |
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Description
The llm-nebula npm package version 1.0.0 contains a malicious preinstall script that executes automatically during installation. This script is heavily obfuscated and runs with the user's privileges, enabling arbitrary filesystem, process, and network operations. The package pretends to be a legitimate LLM SDK but includes a runtime decoder that dynamically resolves Node.js built-in modules and commands, allowing remote code execution at install time.