MAL-2026-16277 Malicious code in xa424234657567 (npm)
Malicious package
Published
MAL-2026-16277 is a malicious package: xa424234657567 (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-2026-16277/ (Markdown: https://insights.sbomify.com/MAL-2026-16277/index.md)
- Package
- xa424234657567
- Registry
- npm
What is MAL-2026-16277?
MAL-2026-16277 is a malicious package in xa424234657567, published on 18 Sep 2026.
Official description
The package ships console.js, which when loaded in a browser on any host matching duel.com fetches https://unpkg.com/[email protected]/1.js and https://unpkg.com/[email protected]/ui.js and executes both via (0, eval)(…). On other hosts it redirects the page to duel.com. The declared main/unpkg entry 1.js is a ~740KB single-line Function("ZU7mhwD", "…") loader built from hex-escaped char arrays and a rotor-style decoder, with no readable source. Package metadata is placeholder-quality (name xa424234657567, no README, no repository), inconsistent with a library and consistent with a payload-delivery artifact. Consuming this package on a page served under duel.com results in remote, mutable, attacker-controlled code executing in the page context.
What should I do about MAL-2026-16277?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.