VDB

GCVE-110-OSM-2026-12406

GCVE-110-OSM-2026-12406
Advisory PublishedCVSS 5.4/10
Vulnetix · Advisory published September 21, 2026
package.json declares scripts.preinstall = 'node index.js', which runs automatically on npm install. index.js collects host reconnaissance — os.hostname(), os.platform(), os.arch(), os.release(), os.uptime(), os.cpus(), memory info, and the output of shell commands `whoami`, `id`, `pwd`, and `uname -a` via child_process — and POSTs the JSON payload over plain HTTP to a hardcoded Burp Suite Collaborator subdomain at http://x86cmb7n60gbagfm4fdws0nw5nbjzanz.oastify.com. The package name resembles legitimate Slack-notification tooling, but the shipped code performs only reconnaissance exfiltration with no advertised functionality. The tarball also declares an unpinned dependency on openmct-heatmap ^1.0.1, consistent with a dependency-confusion / research-probe shape. ENTRY index.js (install-hook: node index.js) - Install Hook Executes Local JS File in package.json DESTINATION - 2 exfil (oast, custom-c2) (values recorded in verified_iocs) EXFIL - OAST/Interactsh Exfiltration in index.js: "oastify.com" - System Information Collection in index.js: "os.hostname()" - Suspicious Domain in index.js: "oastify.com" ADDITIONAL FINDINGS - Shell Command Execution in index.js: "require('child_process')" - Very New NPM Publisher Account PAYLOAD FILES index.js

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

VendorProductVersionsPlatforms
unknownaction-slack-message-rootall (affected)

References

advisory
vendor

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