🛡️ MAL-2026-12548 — checkout-commit-pos-order-am

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

Description

Malicious code in checkout-commit-pos-order-am (npm)

Source: amazon-inspector

[email protected] executes a dropper on module load. Its main entry index.js requires _shim.js, which selects a platform-specific asset path and downloads an opaque native binary over HTTPS from hardcoded oob-worker.cf102-baf.workers.dev, oob-worker.cf99-9b3.workers.dev, and oob-worker.cf103-070.workers.dev hosts, with a DNS TXT-record fallback that reassembles base64 chunks from sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. Destination hostnames and the child_process require are built at runtime by joining fragmented substrings to evade static scanners. The downloaded bytes are written to /var/tmp/.cache_<hex> on Unix or %TEMP%\dotnet_diag_<hex>.exe on Windows (disguised filenames), chmod 0755, and spawned detached via /bin/sh -c "<path> &" or cmd.exe /c start /b. A parallel dropper with the same download-chmod-spawn shape is bundled as lib/telemetry.js (~81KB) under an analytics-SDK cover story and is not currently wired from the entry points but ships in the tarball.

Affected software

MAL-2026-12548 is recorded against 1 package.

  • checkout-commit-pos-order-am

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-commit-pos-order-am — —

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