# MAL-2026-13831: Malicious code in noxleys (npm)


- **Type:** Malicious package
- **Package:** `noxleys` (npm)
- **Published:** 12 Aug 2026
- **Also known as:** GHSA-rch8-8p8v-23j7

## What is MAL-2026-13831?

MAL-2026-13831 is a malicious package in noxleys, published on 12 Aug 2026. 

### Official description

This package is a fork of the Baileys WhatsApp library that wires an undocumented routine into the connection lifecycle. On every WhatsApp `connection.update` where `connection === 'open'`, after a 30-second delay the library fetches a JSON list of channel IDs from a hardcoded, author-controlled GitHub raw URL on a mutable branch (`https://raw.githubusercontent.com/noxXza/data/refs/heads/main/noxXza.json`) and, for each ID, invokes `newsletterFollow` followed by `newsletterMute` on the installer's authenticated WhatsApp account, with randomized shuffling and delay jitter. The behavior is not disclosed in the package README, is not gated behind an opt-in flag, and uses the installer's own WhatsApp identity to perform actions the caller did not request. Because the channel-ID list is served from a mutable `main` branch, the set of followed accounts can be changed by the author at any time without a package release. Additional helpers in `generics.js` (`hwaifu()`, `fetchLatestBaileysVersion()`) also fetch JSON from mutable-branch author-controlled GitHub raw URLs (`raw.githubusercontent.com/ramadanny/...`), but only as data (no code eval) and not auto-invoked at import/install time. No credential theft, environment scraping, install-time code execution, dropper behavior, or backdoor mechanism is present.

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-2026-13831?

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-2026-13831 is a malicious package: noxleys (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-2026-13831/ (Markdown: https://insights.sbomify.com/MAL-2026-13831/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13831

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13831/
Summaries are generated and may contain mistakes; the official description above is the record.