MalwarePublished 16 Jun 2026Updated 13 Jul 2026

nottuff7 (npm) · Malicious Code

Affects nottuff7Source GCVE Database

Malicious package : remove nottuff7 and rotate any secrets on hosts that installed it.

Data as of 26 Oct 2026, 15:56 UTC

Classification

Malicious package

Published to npm · OSV MAL-2026-5918

What to do

Remove nottuff7 from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.

Affected software

Product	Affected	Fixed in
npmnottuff7	Affected =1.7.7 =1.1.7 =2.0.0	Fixed in–

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Description

The npm package 'nottuff7' version 1.7.7 is part of a coordinated spam-publication family republishing a Scramjet web-proxy payload as a static site. Its main entry is a browser ServiceWorker script that does not execute code during installation or runtime in Node.js, thus no install-time code execution or credential theft occurs. The malicious behavior manifests when the package assets are served to browsers via npm CDN services, enabling proxy usage that bypasses web filters and serves ad-monetization content. Although no direct installer-side exploitation is present, any system with this package installed should be considered compromised due to the potential for full control via the browser context. Immediate removal and secret/key rotation are recommended.

Impact

Systems with 'nottuff7' version 1.7.7 installed may be fully compromised, as the package enables a web-proxy payload that can be used to bypass web filters and deliver malicious or unwanted content. While no installer-side code execution or credential theft occurs, the browser-executed ServiceWorker can facilitate unauthorized proxying and ad-monetization. The compromise risk extends to all secrets and keys on the affected system, which should be considered exposed.

Defensive guidance

The recommended mitigation is immediate removal of the 'nottuff7' package version 1.7.7 from all affected systems. Additionally, all secrets and keys stored on compromised systems should be rotated immediately from a secure, unaffected environment. Monitor for any signs of persistent compromise beyond the presence of this package.

Summary

The 'nottuff7' npm package version 1.7.7 is identified as malicious, belonging to a family of packages that republish the same Scramjet web-proxy payload. The package's main entry point is a ServiceWorker script intended to run in browsers, not Node.js, preventing install-time code execution or lifecycle hook exploitation. The malicious payload is heavily obfuscated and delivered through assets served by npm CDN hosts, allowing users to bypass web filters by accessing the proxy via registry-CDN hostnames. The package also includes a popunder ad-monetization mechanism. Despite no installer-side credential theft or remote code execution, the presence of this package indicates a fully compromised environment, as stated by the GHSA-malware source.

References

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What to do

Affected software

Description

AI analysisMachine-generated, updated 13 Jul 2026, 09:23 UTC

Technical details

References

Community reviews