Malicious code in @uwr/colors (npm)
--- _-= 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.
AI Analysis
Technical Summary
The @uwr/colors npm package version 1.3.6 includes a postinstall script that executes os.hostname() to obtain the installer's machine hostname and then performs a DNS lookup to a domain under oastify.com, a known Burp Collaborator service used for out-of-band data exfiltration. This behavior leaks sensitive environment information during installation without user consent. The package's minimal functionality and empty author field indicate it is likely a malicious package designed for reconnaissance or dependency confusion attacks targeting internal namespaces.
Potential Impact
The vulnerability results in unauthorized leakage of the installer's machine hostname to an external attacker-controlled domain during package installation. This can aid attackers in reconnaissance and potentially facilitate further targeted attacks. There is no indication of code execution or other direct compromise beyond information leakage.
Mitigation Recommendations
No official patch or remediation is currently available. Users should avoid installing the @uwr/colors package version 1.3.6. Verify package authenticity before installation, especially for packages with unverified authors or suspicious scopes. Monitor for updates or advisories from trusted sources regarding this package.
Malicious code in @uwr/colors (npm)
Description
--- _-= 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.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The @uwr/colors npm package version 1.3.6 includes a postinstall script that executes os.hostname() to obtain the installer's machine hostname and then performs a DNS lookup to a domain under oastify.com, a known Burp Collaborator service used for out-of-band data exfiltration. This behavior leaks sensitive environment information during installation without user consent. The package's minimal functionality and empty author field indicate it is likely a malicious package designed for reconnaissance or dependency confusion attacks targeting internal namespaces.
Potential Impact
The vulnerability results in unauthorized leakage of the installer's machine hostname to an external attacker-controlled domain during package installation. This can aid attackers in reconnaissance and potentially facilitate further targeted attacks. There is no indication of code execution or other direct compromise beyond information leakage.
Mitigation Recommendations
No official patch or remediation is currently available. Users should avoid installing the @uwr/colors package version 1.3.6. Verify package authenticity before installation, especially for packages with unverified authors or suspicious scopes. Monitor for updates or advisories from trusted sources regarding this package.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- MAL-2026-10179
- Osv Schema Version
- 1.7.4
- Aliases
- []
- Ecosystems
- ["npm"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a520ea768715ace438f4464
Added to database: 07/11/2026, 09:36:39 UTC
Last enriched: 07/11/2026, 09:45:38 UTC
Last updated: 07/30/2026, 13:30:56 UTC
Views: 216
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