GCVE-110-OSM-2026-2354

Advisory PublishedCVSS 5.4/10

Vulnetix · Advisory published April 15, 2026

Install-time preinstall/install hooks harvest local user/host/path/package context and transmit encoded telemetry to canarytokens.com endpoints over HTTP and DNS. Both lifecycle hooks compute base64 of whoami/hostname/pwd/package name, send it via curl to canarytokens.com/feedback/tags/... and trigger nslookup to a package-derived canary subdomain, providing install-time host beaconing without user consent.

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Weaknesses (CWE)

CWE-506Embedded Malicious Code

Risk Scores

CVSS 3.1

5.4/10

Medium · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Affected Products

Vendor	Product	Versions	Platforms
unknown	paychex-common-vendor-lib	3000.1.621 (affected)	—

References

Malicious npm package: paychex-common-vendor-lib

advisory

vendor

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