# MAL-2026-4499: Malicious code in bolt-delivery-menu-app (npm)


- **Type:** Malicious package
- **Package:** `bolt-delivery-menu-app` (npm)
- **Published:** 20 May 2026
- **Also known as:** GHSA-75c2-fw59-mg5f, GHSA-pfrq-994m-rxrr

## What is MAL-2026-4499?

MAL-2026-4499 is a malicious package in bolt-delivery-menu-app, published on 20 May 2026. 

### Official description

Package executes a DNS-based beacon at both install time (package.json scripts.install runs `node index.js`) and on every `require()` of the module. lib/core.js reads `os.userInfo().username`, `os.hostname()`, and `process.cwd()`, concatenates them with a campaign tag into a single label, and triggers `dns.resolve4` against that label under the attacker-controlled domain `oob.sl4x0.xyz`, leaking installer host identity over DNS (a channel chosen to bypass HTTP-egress controls). The C2 domain and Node built-in names (`os`, `dns`, `process`, `resolve4`) are stored as char-code arrays in lib/b02e30.js and lib/6ad264.js to defeat string-grep scanners. The package name `bolt-delivery-menu-app` impersonates the Bolt delivery brand while shipping generic 'Enterprise Utilities' boilerplate as its cover story, and the author email `research@sl4x0.xyz` resolves to the same domain as the exfil destination — the typosquat lure, the cover identity, and the C2 are one operation. README falsely claims 'No network requests'.

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-2026-4499?

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-2026-4499 is a malicious package: bolt-delivery-menu-app (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-2026-4499/ (Markdown: https://insights.sbomify.com/MAL-2026-4499/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-4499

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-4499/
Summaries are generated and may contain mistakes; the official description above is the record.