GCVE-110-OSM-2026-6286

Advisory PublishedCVSS 9.6/10

Vulnetix · Advisory published June 19, 2026

Self-replicating npm worm (first wave, from ~2025-09-14) that began with @ctrl/tinycolor and spread to ~195 packages by stealing maintainer npm tokens and republishing trojanized versions of each victim's packages. A bundled bundle.js runs on install, uses TruffleHog to scan the host for secrets (npm/GitHub/AWS/GCP tokens), exfiltrates them to attacker-created public GitHub repositories named 'Shai-Hulud', and self-propagates by publishing malicious versions to other packages reachable via the stolen credentials.

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Weaknesses (CWE)

CWE-506Embedded Malicious Code

Risk Scores

CVSS 3.1

9.6/10

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

Affected Products

Vendor	Product	Versions	Platforms
unknown	react-jsonschema-rxnt-extras	—	—

References

Malicious npm package: react-jsonschema-rxnt-extras

advisory

vendor

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