MAL-2026-16307
Malicious code in chai-testing (npm)
Details
--- _-= Per source details. Do not edit below this line.=-_
## Source: amazon-inspector (da6bebc82e500e38b0ab9c507b1d56c18a05a1ffd04fcee60f0dcad991c8944a) The package's main entry (index.js) spawns a detached `node lib/caller.js` when the module is required. caller.js base64-decodes a hardcoded URL (https://ipcheck-hashed.vercel.app/api/auth/...) stored in a fake `process.env.DEV_API_KEY` constant, POSTs to that endpoint via axios, and executes the returned body by constructing a Function and invoking it with Node's `require`. The endpoint and header values are base64-encoded and decoded with atob at runtime to hide the destination from review. The package name and README metadata mimic legitimate chai/pino testing and logging libraries, but the shipped code is unrelated to any advertised functionality. Requiring the module — including via the exported middleware, which invokes the dropper as a side effect — triggers execution of attacker-controlled JavaScript with full Node privileges on the installer's host.
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Affected packages
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