nottuff25 (npm) · Malicious Code
Affects nottuff25Source GCVE Database
Malicious package : remove nottuff25 and rotate any secrets on hosts that installed it.
Data as of 26 Oct 2026, 15:56 UTC
Malicious package
Published to npm · OSV MAL-2026-5916
What to do
Remove nottuff25 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 |
|---|---|---|
| npmnottuff25 | Affected
| Fixed in– |
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Description
The npm package 'nottuff25' version 1.7.7 is identified as malicious. It misrepresents itself by shipping a browser ServiceWorker and a static site unrelated to its advertised purpose. The package contains a bash script that automates mass publication of numerous sibling malicious packages, indicating a coordinated namespace-pollution campaign. Additionally, it includes browser-side adware that opens a popunder on user interaction. There is no evidence of install-time remote code execution or credential theft, but the package's presence indicates a compromised environment.