GCVE-110-OSM-2026-2424

Advisory PublishedCVSS 9.6/10

Vulnetix · Advisory published April 15, 2026

Drops and executes native ELF binary via postinstall hook; binary contacts https://web.b4n1.com/install and reads .env and system environment variables. **Trigger** (`postinstall`): executes `node scripts/postinstall.js` at install time. **Binary `bin-b4n1web-linux`** (elf): contacts `https://web.b4n1.com/install` at install time. **Collection**: reads environment variables — `HOME`, `USERPROFILE`, `USER`, `PATH`. **File access**: reads `.env`. **Network contact**: `https://web.b4n1.com/install`.

Download JSON Open in Console

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	b4n1-web	* (affected)	—

References

Malicious npm package: b4n1-web

advisory

vendor

Browse GCVE Records

73,866 records in the GCVE database · Updated July 19, 2026

No matching records found.

Explore Further

Investigate this vulnerability in the interactive console or download the raw GCVE record.

Open in Console Download JSON