🛡️ MAL-2026-12541 — checkout-accounts-holder

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

Description

Malicious code in checkout-accounts-holder (npm)

Source: amazon-inspector

On require('checkout-accounts-holder'), index.js loads _platform.js which immediately downloads a platform-specific binary over HTTPS from hostnames assembled at runtime via .join("") over split string fragments (resolving to oob-worker.cf100-416.workers.dev with a DNS TXT fallback under sdk.dl.wel1.ru), writes the opaque payload to /tmp or %TEMP% under cover names such as .cache_<rand> and dotnet_diag_<rand>.exe, chmods it 0o755, and spawns it detached via /bin/sh -c "<path> &" or cmd.exe /c start. The module presents itself as analytics_state/telemetry. A second dropper of the same shape ships in lib/telemetry.js (base64-chunked payload, fs["chmod"+"Sync"], require("child_"+"process"), spawn("/bin/sh", ["-c", filePath + " &"])), currently unreferenced but present in the published tarball. Destination hostnames are string-split to evade plain-text scanners, and the run-write-chmod-spawn chain executes attacker-controlled bytes with the installer's privileges.

Affected software

MAL-2026-12541 is recorded against 1 package.

  • checkout-accounts-holder

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-accounts-holder — —

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