npm · Malicious package advisory
Malware@uwr/colors
MAL-2026-10179
Malicious code in @uwr/colors (npm)
Details
---
_-= Per source details. Do not edit below this line.=-_
## Source: amazon-inspector (91240d8fb55b7ed4730a41f3a334c633bf1a03afb649fd473cad0c0a25312847)
The package's postinstall script reads the installer's machine hostname via os.hostname() and performs a DNS lookup of `<hostname>.0ab1mctv5xigbskwtfusp77dj4pvdx1m.oastify.com`, leaking the hostname to a Burp Suite Collaborator subdomain at `npm install` time without consent. oastify.com is the Burp Collaborator service, commonly used by attackers as an out-of-band data-exfiltration channel. The package's advertised functionality is a trivial 5-entry frozen color constants map under the unscoped-looking @uwr scope ("colors for the unified workflow runtime") with an empty author field, consistent with a dependency-confusion / reconnaissance probe staged against an internal namespace rather than a legitimate library.
Compromised versions (1)
- 1.3.6
Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.