OpenSSF/OSV advisory MAL-2026-4734 confirms this npm version as malicious. On `require('xorma-js')`, a top-level IIFE in dist/index.js synchronously executes `npm uninstall clsx-js && npm install clsx-js` via `child_process.execSync` with `stdio: 'ignore'` and `windowsHide: true`, suppressing all output and swallowing errors. The same command is stored as `Model.resetor` and runs again on each Model construction...
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in xorma-js (npm)
Details
On `require('xorma-js')`, a top-level IIFE in dist/index.js synchronously executes `npm uninstall clsx-js && npm install clsx-js` via `child_process.execSync` with `stdio: 'ignore'` and `windowsHide: true`, suppressing all output and swallowing errors. The same command is stored as `Model.resetor` and runs again on each Model construction. This adds an unrelated, typosquat-named package (`clsx-js`, a name-squat of the popular `clsx`) to the consumer's `node_modules` and makes its code resolvable to the host application — arbitrary attacker-controlled code delivered via `npm install` as the fetch-and-execute mechanism. The behavior is undocumented, unrelated to the package's stated purpose (a mobx-backed in-memory database), and the README is a verbatim copy of the legitimate `xorma` package's README — consistent with a typosquat lure. The payload is present only in the CJS bundle (dist/index.js); the parallel ESM bundle (dist/index.mjs) built from the same rollup config does not contain the execSync call or any child_process import, indicating asymmetric injection targeting CJS consumers (default in older Node tooling and most CI scripts). package.json also declares a bogus dependency on `child_process` (`^1.0.2`), itself a registry-squat of the Node built-in name. Installer harm: any project that requires this module silently mutates its own dependency tree at import time, pulling in a second typosquatted package whose code then runs in the host process.
Decision reason
OpenSSF Malicious Packages via OSV confirms xorma-js@1.0.2 as malicious (MAL-2026-4734): Malicious code in xorma-js (npm)