MAL-2026-12567

    Dashboard / Malicious Package / MAL-2026-12567

    MAL-2026-12567

    Published: 5 Aug 2026Last Modified: 5 Aug 2026

    Summary: Malicious code in checkout-input-card-logic (npm)

    Details: Source: amazon-inspector (1cc552600295f6b008943a756a1cf29218d2e6d93a40dd72ea4cd06f039f80cb) On require() of the package, index.js loads _vendor.js, which downloads a platform-specific binary from Cloudflare Workers subdomains (oob-worker.cf*.workers.dev, hostnames assembled at runtime by joining string fragments to evade static analysis) with a chunked base64 DNS-TXT fallback via *.dl.wel1.ru. The fetched bytes are written to /var/tmp or %TEMP% under cover names (`.cache_<rand>`, `dotnet_diag_<rand>.exe`, `analytics_state`), chmod 0755'd, and spawned detached via /bin/sh -c or cmd.exe. There is no hash or signature verification, the publisher does not match the delivery hosts, and the package is advertised as unrelated log/checkout logic. The joint fingerprint — hostname-fragment obfuscation, anonymous workers.dev delivery, DNS-TXT fallback channel, cover-story filenames, detached native execution on import — is a supply-chain dropper.

    References: https://www.npmjs.com/package/checkout-input-card-logic/v/35.8.8

    Affected packages

    Package

    Name: checkout-input-card-logic

    Purl: pkg:npm/checkout-input-card-logic

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    35.8.8
    MAL-2026-12567 | CVE-DB