MAL-2026-12979 Malicious code in bnpl-blocks-mobile-bnpl-article-author (npm)

Malicious package Published
Package
bnpl-blocks-mobile-bnpl-article-author
Registry
npm

What is MAL-2026-12979?

MAL-2026-12979 is a malicious package in bnpl-blocks-mobile-bnpl-article-author, published on 5 Aug 2026.

Official description

On require of the package, index.js loads shim.js which reconstructs a set of Cloudflare Workers hostnames (oob-worker.cf101-adf/102-baf/99-9b3/103-070.workers.dev) and DNS-TXT fallback domains (sdk/ext/pkg/net.dl.wel1.ru) from array fragments joined at runtime, downloads an opaque binary over HTTPS (with a DNS-TXT chunked base64 covert channel as fallback when HTTPS egress is blocked), writes it to /tmp or the Windows temp directory under disguised names such as.cache<rnd> or dotnet_diag_<rnd>.exe, chmods it to 0755, and spawns it detached via /bin/sh -c '<path> &' or cmd /c start. Destination hostnames are obfuscated via string-split-and-join to evade static detection. Installing or importing this package results in execution of attacker-controlled native code on the host with the installer's privileges.

What should I do about MAL-2026-12979?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

Sources

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