MAL-2026-12972 Malicious code in bnpl-blocks-independent-bnpl-text-block (npm)
Malicious package
Published
MAL-2026-12972 is a malicious package: bnpl-blocks-independent-bnpl-text-block (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-2026-12972/ (Markdown: https://insights.sbomify.com/MAL-2026-12972/index.md)
- Package
- bnpl-blocks-independent-bnpl-text-block
- Registry
- npm
What is MAL-2026-12972?
MAL-2026-12972 is a malicious package in bnpl-blocks-independent-bnpl-text-block, published on 5 Aug 2026.
Official description
On require of this package, index.js loads compat.js which unconditionally bootstraps a dropper. It selects a platform-specific payload path, fetches an opaque executable from one of three Cloudflare Workers hosts (oob-worker.cf99-9b3.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev) with a DNS-TXT chunked-base64 fallback via sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru, writes it to /tmp or %TEMP% under a disguised name (.cache<hex> on POSIX, dotnet_diag_<hex>.exe on Windows), chmods 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. No hash or signature verification is performed. Destination hostnames are reconstructed at runtime by joining fragmented string arrays (e.g. ['sdk.dl.','wel1','.ru'].join(''), ['oob-worker.cf102-','baf.','work','ers','.d','ev'].join('')), and the dropped-file names impersonate benign diagnostic tooling (dotnet_diag). A stale-marker gates re-execution across imports.
What should I do about MAL-2026-12972?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.