# MAL-2026-5914: Malicious code in nottuff15 (npm)


- **Type:** Malicious package
- **Package:** `nottuff15` (npm)
- **Published:** 16 Jun 2026
- **Also known as:** GHSA-pvm5-2r8w-jpqq

## What is MAL-2026-5914?

MAL-2026-5914 is a malicious package in nottuff15, published on 16 Jun 2026. 

### Official description

nottuff15 is one entry in a coordinated npm namespace-spam campaign. The tarball ships auto-publish.sh, a bash script that copies the package contents into ~95 differently-named tarballs (imillegal*, ishowfeet*, nottuff1..30, abuden*, ratelimitsucks*) and force-publishes each via `npm publish`; the package's own name 'nottuff15' appears in that list, confirming this release is generator output. Package metadata is placeholder (description: "package", empty author). The actual payload is a bundled SPA + ServiceWorker web-proxy (Scramjet) plus a 5.4MB WASM-curl bundle in j3ve9/ls3ez.mjs, distributed via npm but intended to be hosted as a static site — npm is being abused as a static-asset CDN. The package's main entry (sw.js) calls importScripts() on its first line, which is a browser ServiceWorker global undefined in Node, so `require('nottuff15')` throws a ReferenceError immediately — there is no functioning library here. The bundled index.html registers click/keydown/touchstart listeners that redirect users to https://abdct.com/ on first interaction (rate-limited via localStorage), and loads a remote script from https://cdn.21baseballacademy.com/script/jrqK2HPsliMjRW5Q.js — browser-side affiliate-redirect infrastructure under a tutoring-themed cover page. Twelve of the bundled JS assets are heavily obfuscated. No preinstall/install/postinstall/prepare hooks are declared, so there is no install-time auto-execution against the installer.

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-2026-5914?

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-2026-5914 is a malicious package: nottuff15 (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-2026-5914/ (Markdown: https://insights.sbomify.com/MAL-2026-5914/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-5914

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-5914/
Summaries are generated and may contain mistakes; the official description above is the record.