Malicious code in test22221 (npm)
Exploitation and risk
Source statusCISA KEV lists vulnerabilities known to be exploited. FIRST EPSS estimates the likelihood of exploitation in the next 30 days. An unavailable score does not mean zero risk.
Which CVEs have scores here?
This view includes predictions for CVE identifiers explicitly listed in public NuGet advisories. Microsoft release pages have their own prediction coverage. Check source status for the scope and latest checks.
No exploitation or prediction data is available here for these CVEs. This does not mean they are safe or unlikely to be exploited.
osv · MAL-2026-12478
Published--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (e4a3401759b5c6d7effdafcbae6027657e3cf8f9aabf1f04dfc2fa9039b64e53) package.json declares preinstall and postinstall lifecycle hooks that run on `npm install`. Both hooks curl a hardcoded bare-IP endpoint over plain HTTP at 54.37.234.136, sending the installer's username (`whoami`), hostname, current working directory, and a timestamp as query-string parameters to `http://54.37.234.136/voicemail`. The same lifecycle scripts also embed an unbounded `for((i=1;;i++))` loop that repeatedly curls incrementing paths on the same host with a 10-second sleep, functioning as a long-poll channel to the attacker-controlled endpoint during install. The destination is a bare IP with no relationship to any package publisher domain, and the collected fields are host-identification data with no legitimate purpose in an install hook.
- Source published
- 5 Aug 2026 12:44:50 UTC
- Source modified
- 24 Sep 2026 09:30:16 UTC
- Saved here
- 24 Oct 2026 13:17:17 UTC
- Source terms
- OSV · upstream source license applies
Original source record · Cite this exact observation · Complete original publisher JSON
Source: osv · OSV · upstream source license applies. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.