MAL-2026-6195 Malicious code in ts-linter-builders (npm)
- Package
- ts-linter-builders
- Registry
- npm
What is MAL-2026-6195?
MAL-2026-6195 is a malicious package in ts-linter-builders, published on 19 Jun 2026.
Official description
index.js imports child_process and contains a hardcoded outbound POST to https://tg-wallet-manager.vercel.app, with additional fetch() calls to the same destination. The code reads environment data and host identifiers and ships them to this attacker-controlled endpoint. The package name advertises a TypeScript linter helper, but the embedded behavior is unrelated to linting and matches the shape of a credential/host-info beacon. The hardcoded third-party Vercel-hosted endpoint, combined with environment reads and child_process import, constitutes an installer-side exfiltration / RCE staging surface with no legitimate purpose for a 'linter builder' package.
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.
What should I do about MAL-2026-6195?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.
Sources
Also known as GHSA-4g6m-jp93-p5x7.