@nestjs-passport/jwt (npm) · Malicious Code
Affects @nestjs-passport/jwtSource GCVE Database
Malicious package : remove @nestjs-passport/jwt and rotate any secrets on hosts that installed it.
Data as of 8 Aug 2026, 15:19 UTC
Malicious package
Published to npm · OSV MAL-2026-13627
What to do
Remove @nestjs-passport/jwt 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 |
|---|---|---|
| npm@nestjs-passport/jwt | 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 npm package @nestjs-passport/jwt contains malicious code disguised as a minimal HS256 JWT helper. It uses heavy JSFuck obfuscation and dynamic code evaluation at import time, executing hidden payloads in the installer's Node.js process. The package is a typosquat of legitimate @nestjs packages and exposes obfuscated private fields inconsistent with normal build outputs. This concealment technique allows arbitrary code execution during module load without readable code paths.