MAL-2026-6797

Dashboard / Malicious Package / MAL-2026-6797

MAL-2026-6797

Summary: Malicious code in mongoose-lean-hooks (npm)

Details: Source: amazon-inspector (540ace1cb8bc936ea953554a9ffc28203370f82cb5e5a7dfbf1454bf0e834b9a) On `require('mongoose-lean-hooks')`, the package's main entry (index.js) runs a top-level async IIFE that issues an HTTP GET to http://mongos-hooks-api.vercel.app/defy/v3 with a bearer-style header. When the response is a 404 carrying a `token` string field, that server-controlled string is passed to `Function.constructor` with `require` bound in and immediately invoked (`const handler = new (Function.constructor)("require", res.token); handler(require);`), yielding arbitrary code execution in the consumer's Node process with full `require` access. The endpoint, path, and header token are hidden in test/config_test.js under a `module.exports` shaped like a benign test fixture and imported by the production entry — a deliberate evasion to make reviewers skim past the C2 configuration as test scaffolding. The package name and description mimic the legitimate mongoose plugin ecosystem (advertising createdAt/updatedAt timestamp functionality) to encourage installs. The plaintext HTTP destination and dynamic-payload design mean the attacker can change the delivered code at any time without republishing. Source: ghsa-malware (51f21ca8cb459221a26134e631f974e5a26cb292386a957c75da31b538119c61) Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

References: https://github.com/advisories/GHSA-98h3-p825-wwhh, https://www.npmjs.com/package/mongoose-lean-hooks/v/0.5.4, https://www.npmjs.com/package/mongoose-lean-hooks/v/0.5.5, https://www.npmjs.com/package/mongoose-lean-hooks/v/0.5.7, https://www.npmjs.com/package/mongoose-lean-hooks/v/0.5.6