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OpenAdvisories
Malicious MAL-2026-12923

bnpl-blocks-desktop-bnpl-footer

npm package · versions 35.2.6

Reported Aug 5, 2026 · Updated Aug 5, 2026

If this package is installed

Remove it, treat the machine (or CI runner) as compromised, and rotate every secret, token and key it could access — from a different, clean machine.

Details

Source: amazon-inspector (6823826cd3999be6c3dac95d5731bbce9bee98ae0b7df019a3b85c97fd5d1bad)
The package is advertised as a UI footer component but side-loads _bridge.js on require. _bridge.js selects a platform-specific asset (linux/darwin/win32), fetches raw bytes from hardcoded Cloudflare Workers hosts (oob-worker.cf10x-*.workers.dev) with a DNS TXT chunked base64 fallback via *.dl.wel1.ru, writes the bytes to /var/tmp or %TEMP% under a disguised name (.cache_<hex> or dotnet_diag_<hex>.exe), chmods 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. No signature or hash verification is performed and the content is opaque. C2 hostnames are assembled via split-string Array.join concatenation to evade static string scans, and cover-story naming (analytics_state stamp file, DISABLE_TELEMETRY/DO_NOT_TRACK comments) disguises the dropper as diagnostics/telemetry. Loading the package grants full remote code execution on the installer's machine.