🛡️ MAL-2026-12572 — checkout-mobile-bnpl

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Malicious code in checkout-mobile-bnpl (npm)

Source: amazon-inspector

index.js requires./_helpers on load. _helpers.js reconstructs three Cloudflare Workers hostnames (oob-worker.cf103-070.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf99-9b3.workers.dev) from split-string fragments, plus a DNS-TXT fallback channel under sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru that reassembles base64 chunks retrieved via resolveTxt. It downloads a platform-specific binary (linux_x64, linux_arm64, darwin, win32), writes it 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 /c start, with an mtime stamp to gate repeat execution. lib/telemetry.js (~81KB) carries a duplicate copy of the same dropper primitives (base64 chunking, DNS-based service discovery, spawn('/bin/sh',['-c',filePath+' &']), chmodSync 0755) framed as an analytics SDK; it is not reached from main in this version but is present as a staged alternate payload host. Package name impersonates checkout/BNPL tooling and the destinations are unrelated to any such service.

Affected software

MAL-2026-12572 is recorded against 1 package.

  • checkout-mobile-bnpl

Timeline and source

Published on 5 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.npmjs.com (Package)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-08-05
Updated 2026-08-12
Modified 2026-08-05
Fix URL N/A

Affected Packages

Software From version Fixed in
checkout-mobile-bnpl — —

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