MAL-2026-15555 Malicious code in js-array-tokens (npm)
Malicious package
Published
MAL-2026-15555 is a malicious package: js-array-tokens (npm). Every version was published to cause harm.
Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.
Reference: https://insights.sbomify.com/MAL-2026-15555/ (Markdown: https://insights.sbomify.com/MAL-2026-15555/index.md)
- Package
- js-array-tokens
- Registry
- npm
What is MAL-2026-15555?
MAL-2026-15555 is a malicious package in js-array-tokens, published on 29 Aug 2026.
Official description
On module load, index.js reconstructs a URL from a char-code array that decodes to https://access-token-delta.vercel.app/, fetches a JSON response, and passes the response's
token field directly to eval(). Any code the remote host returns executes in the Node.js process that requires this package. The destination is hidden as a numeric array reconstructed via String.fromCharCode, concealing the endpoint from plain-string inspection. The combination of import-time fetch-and-eval against a char-code-obfuscated remote endpoint is a remote-loader pattern with no legitimate use.What should I do about MAL-2026-15555?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.