MAL-2026-12907

    Dashboard / Malicious Package / MAL-2026-12907

    MAL-2026-12907

    Published: 5 Aug 2026Last Modified: 5 Aug 2026

    Summary: Malicious code in bnpl-blocks-component-story-name (npm)

    Details: Source: amazon-inspector (a797e2310dd4df10e11e104dad3fbb135621e9997a5425f480c3c884da59ca6d) On require of this package, index.js loads _polyfill.js which downloads a platform-specific executable from one of four hardcoded Cloudflare Workers hosts (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev), with a DNS-TXT covert-channel fallback that reassembles base64 payload chunks from numeric subdomains of sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The fetched bytes are written to /var/tmp or %TEMP% under disguised names (dotnet_diag_*.exe,.cache_*), chmod 0755, and spawned detached via /bin/sh -c or cmd.exe /c start /b. Destination hostnames are assembled at runtime by joining split string fragments to evade static string scanners. Requiring the package yields arbitrary remote code execution on the installer's host.

    References: https://www.npmjs.com/package/bnpl-blocks-component-story-name/v/35.2.7

    Affected packages

    Package

    Name: bnpl-blocks-component-story-name

    Purl: pkg:npm/bnpl-blocks-component-story-name

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    35.2.7