Malicious code in @beproduct/nestjs-auth (0.1.2 through 0.1.19) — Mini Shai-Hulud worm
Summary
Between 2026-05-11 20:19 UTC and 22:56 UTC, an attacker used a compromised npm publish token to publish 18 malicious versions of @beproduct/nestjs-auth (0.1.2 through 0.1.19). The packages contained payloads from the Mini Shai-Hulud npm supply-chain worm campaign described by Aikido Security.
npm Security removed the malicious versions from the registry shortly after publication, but anyone who ran npm install @beproduct/nestjs-auth resolving to any version in the affected range during that window executed the malicious postinstall script and is potentially compromised.
Version 0.1.20 is a clean republish from the original 0.1.1 source tree.
Impact
The postinstall payload attempted to harvest:
- npm tokens (from
~/.npmrc) - GitHub personal access tokens, OAuth tokens (
gho_*), and Actions OIDC tokens - AWS credentials (from environment variables and
~/.aws/credentials) - HashiCorp Vault tokens
- Other secrets present in environment variables
Exfiltration target: https://filev2.getsession.org. The worm also wrote persistence artefacts (tanstack_runner.js, router_init.js, setup.mjs, plus IDE-hook configurations in .claude/ and .vscode/) into the developer's working tree where the malicious install ran.
Indicators of compromise
| Type | Value |
|---|---|
| File name (payload) | tanstack_runner.js, router_init.js, router_runtime.js |
| SHA-256 (tanstack_runner.js) | 2ec78d556d696e208927cc503d48e4b5eb56b31abc2870c2ed2e98d6be27fc96 |
| SHA-256 (router_init.js) | ab4fcadaec49c03278063dd269ea5eef82d24f2124a8e15d7b90f2fa8601266c |
| Exfil endpoint | filev2.getsession.org |
| Cloud metadata probe | 169.254.169.254/latest/meta-data/iam/security-credentials/ |
| npm token endpoint | registry.npmjs.org/-/npm/v1/tokens |
| Vault probe | vault.svc.cluster.local:8200 |
| IDE hook pattern | .claude/settings.json SessionStart hook + .vscode/tasks.json runOn: "folderOpen" running node .claude/setup.mjs or node .vscode/setup.mjs |
Mitigation
If you installed any version in the range `>=0.1.2