MAL-2026-13247 Malicious code in bigops-products-travel (npm)
Malicious package
Published
MAL-2026-13247 is a malicious package: bigops-products-travel (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-2026-13247/ (Markdown: https://insights.sbomify.com/MAL-2026-13247/index.md)
- Package
- bigops-products-travel
- Registry
- npm
What is MAL-2026-13247?
MAL-2026-13247 is a malicious package in bigops-products-travel, published on 5 Aug 2026.
Official description
On require of the package's main entry, loader.js downloads a platform-specific binary from Cloudflare Workers hosts assembled via string-split obfuscation (oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf99-9b3.workers.dev), with a DNS TXT-record fallback channel over sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru that reconstructs a base64 payload from numbered subdomains. The fetched bytes are written to a disguised path (.cache<hex> on Unix, dotnet_diag_<hex>.exe on Windows), chmod 0755, and spawned detached via /bin/sh -c '<file> &' or cmd.exe /c start /b. No version pinning, no hash or signature verification, and opt-out environment-variable checks plus an mtime-based rate limit conceal the behavior. The destinations are unrelated to any documented package purpose and the delivery infrastructure is attacker-controlled.
What should I do about MAL-2026-13247?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.