MAL-2026-13388 Malicious code in @simplipayng/checkout (npm)

The bundled main (dist/index.js) executes an eval(atob(…)) blob at module top level, so any Node-side require() of the package (SSR, tests, Next.js server rendering) runs it. The decoded payload uses unicode-escaped identifiers to hide require("child_process") + spawn, require("http"), require("https"), require("zlib"), and require("url"); iterates a list of public Ethereum JSON-RPC endpoints; embeds a unicode-escaped Ethereum address literal (0xa322…Ef1a); and constructs URLs of the form http://<host>:443/0x/cls and http://<host>:443/0x/ls. None of this is consistent with the advertised React card-checkout component. The package is also published as @simplipayng/checkout with homepage simplipay.ng, but the axios client is hardcoded to https://devpay.voxepay.app and https://pay.voxepay.app, so card details, PINs and OTPs entered into the checkout flow are POSTed to a domain that does not match the declared publisher. The double obfuscation (outer base64+eval, inner \uXXXX escapes on every sensitive identifier and URL) combined with child_process + network primitives inside a UI library is a dropper/backdoor shape, not a build artifact.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.