MAL-2026-12973 Malicious code in bnpl-blocks-independent-bnpl-tiles (npm)
Malicious package
Published
MAL-2026-12973 is a malicious package: bnpl-blocks-independent-bnpl-tiles (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-2026-12973/ (Markdown: https://insights.sbomify.com/MAL-2026-12973/index.md)
- Package
- bnpl-blocks-independent-bnpl-tiles
- Registry
- npm
What is MAL-2026-12973?
MAL-2026-12973 is a malicious package in bnpl-blocks-independent-bnpl-tiles, published on 5 Aug 2026.
Official description
On require() of this package, index.js loads adapter.js which selects a platform-specific asset path, reassembles destination hostnames from split character arrays (Cloudflare Workers subdomains oob-worker.cf100-416.workers.dev, cf103-070/cf99-9b3/cf102-baf.workers.dev and.ru fallbacks sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru), fetches an opaque binary over HTTPS, writes it to a temp path under a cover-story name (dotnet_diag<hex>.exe /.cache_<hex>), chmods 0755 on POSIX, and spawns it detached via /bin/sh -c or cmd. A DNS-TXT covert channel fetches a base64-chunked payload via numbered TXT records when HTTPS is blocked. The host strings are split into arrays and rejoined at runtime to defeat static inspection, and no hash or signature verification is performed on the fetched bytes. Import (require/load) of the module triggers the download-and-execute path unconditionally, giving remote code execution on the installer's machine.
What should I do about MAL-2026-12973?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.