cloudsmith-vsc
This report shows the evidence for cloudsmith-vsc@2.1.2, the only known version.
OpenSSF/OSV Malicious Advisory
imported 4mo ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-4530 confirms this npm version as malicious.
Advisory
MAL-2026-4530
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in cloudsmith-vsc (npm)
Details
package.json declares a preinstall hook (`"preinstall": "node index.js"`) that runs automatically on `npm install`. index.js reads installer-side system identity and files — `os.hostname()`, `os.userInfo()`, homedir, DNS configuration, package metadata, `/etc/passwd`, and `/etc/hosts` — and POSTs them over HTTPS to a hardcoded Burp Collaborator subdomain (`6hoa7n94q5v6yig1hqokwg6f066zupie.oastify.com`). The package metadata is empty (no description, author, or license) and the name impersonates the Cloudsmith vendor brand, consistent with a dependency-confusion / typosquat recon-and-exfil payload. Any machine that installs this package transmits host fingerprinting and local account data to the attacker.
References
Source & flagged code
0 flagged · loading sourceNo flagged code excerpts are attached to this scan.
Findings
1 High
HighOsv Malicious Advisory
Affected versions and remediation
This report applies to cloudsmith-vsc@2.1.2.
The versions list below shows the verdict for each recorded version.
- Avoid installing cloudsmith-vsc@2.1.2. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
Source advisory published: .
This report uses published external intelligence. The advisory does not provide a separate source-code analysis for each listed version.
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