# MAL-2026-12332: Malicious code in @zahlen/checkout-angular (npm)


- **Type:** Malicious package
- **Package:** `@zahlen/checkout-angular` (npm)
- **Published:** 5 Aug 2026
- **Also known as:** GHSA-x4vv-h5rq-v2hm

## What is MAL-2026-12332?

MAL-2026-12332 is a malicious package in @zahlen/checkout-angular, published on 5 Aug 2026. 

### Official description

The package's fesm2022 ESM entry (declared as `module` in package.json and executed on `import` of the library) ends with a trailing `eval(atob('...'))` payload that, once decoded, requires `child_process`, `http`, `https`, and `zlib` via `\uXXXX`-escaped identifier strings to hide the imports from static scanners. The loader queries an Ethereum contract at `0xa322E5f3D311D3080e6f0121063e9aDC2490Ef1a` through `https://eth.blockscout.com/api` (with public RPC fallbacks `1rpc.io/eth`, `eth.drpc.org`, `ethereum-rpc.publicnode.com`, `eth-mainnet.public.blastapi.io`) to read attacker-controlled host/port values from contract storage, then reaches those hosts over HTTP at paths `http://${host}:443/0x/cls` and `http://${host}:443/0x/ls` and passes the returned bytes to `child_process.spawn`. This is an EtherHiding remote-code-execution channel: consuming the library in any Node context that evaluates the ESM (SSR, build tooling, dev servers, tests) triggers on-chain-directed download and execution of arbitrary attacker code. The loader is unrelated to the package's advertised checkout functionality, is appended after the legitimate `export { ZahlenModule,... }` bundle, and is base64+unicode-obfuscated — hallmarks of an injected supply-chain payload rather than package feature code.

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.

## What should I do about MAL-2026-12332?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

## Fix prompt for AI coding agents

```text
MAL-2026-12332 is a malicious package: @zahlen/checkout-angular (npm). Every version was published to cause harm.

Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.

Reference: https://insights.sbomify.com/MAL-2026-12332/ (Markdown: https://insights.sbomify.com/MAL-2026-12332/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-12332

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-12332/
Summaries are generated and may contain mistakes; the official description above is the record.