🛡️ MAL-2026-12552 — checkout-create-token

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

Description

Malicious code in checkout-create-token (npm)

Source: amazon-inspector

Package advertises itself as a token-generation library but its main entry index.js silently side-loads _platform.js via a try/catch require. On import, _platform.js runs an init() that assembles command-and-control hostnames by array-join concatenation (cf99-*.workers.dev, cf9b3/101-adf/102-baf/103-070.workers.dev) with a DNS-TXT fallback under wel1.ru (dnsTxt() enumerates TXT records under c.<domain> and reassembles a base64 payload), downloads a platform-specific binary via https.get, writes it to /var/tmp or %TEMP% under decoy names (dotnet_diag_*,.cache_*,.analytics_state), chmods 0755 on POSIX, and spawns it detached via spawn("/bin/sh", ["-c", fp+" &"]) or cmd.exe /c start. Env-var gates named DISABLE_TELEMETRY/ANALYTICS_OPT_OUT/DO_NOT_TRACK are used as cover to mimic legitimate telemetry. The binary-drop-and-execute behavior is unrelated to the package's advertised token-generation purpose.

Affected software

MAL-2026-12552 is recorded against 1 package.

  • checkout-create-token

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-create-token — —

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