
Research
Malicious npm Package Brand-Squats TanStack to Exfiltrate Environment Variables
A brand-squatted TanStack npm package used postinstall scripts to steal .env files and exfiltrate developer secrets to an attacker-controlled endpoint.
Replace absolute paths to relative paths after typescript compilation (tsc) during compile-time.
+ Compile time (no runtime dependencies)
First, install tscpaths as devDependency using npm or yarn.
npm install --save-dev tscpaths
# or
yarn add -D tscpaths
"scripts": {
"build": "tsc --project tsconfig.json && tscpaths -p tsconfig.json -s ./src -o ./out",
}
| flag | description |
|---|---|
| -p --project | project configuration file (tsconfig.json) |
| -s --src | source code root directory |
| -o --out | output directory of transpiled code (tsc --outDir) |
You need to provide -s (--src) and -o (--out), because it's hard to predict source and output paths based on tsconfig.json.
I've tried a little and failed. :(
tsc does some magic to determine source and output paths and I haven't dived too deep to mimic it.
For now, it's simpler to provide the paths manually.
If you know how, Pull Requests are welcome!
This is not a mature project yet.
It works for my setup so far.
It may not work correctly if your setup is too complicated, so please do some testing before pushing it to production!!!
FAQs
Replace absolute paths to relative paths after typescript compilation
The npm package tscpaths receives a total of 96,506 weekly downloads. As such, tscpaths popularity was classified as popular.
We found that tscpaths demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?

Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.

Research
A brand-squatted TanStack npm package used postinstall scripts to steal .env files and exfiltrate developer secrets to an attacker-controlled endpoint.

Research
Compromised SAP CAP npm packages download and execute unverified binaries, creating urgent supply chain risk for affected developers and CI/CD environments.

Company News
Socket has acquired Secure Annex to expand extension security across browsers, IDEs, and AI tools.