Malicious code in simple-date-formatter-new-12 (npm)

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (bd79db99adb8878673dd85db5a29661432808fa8fcc5e3d750b907418df8ae5f) npm package [email protected] declares a postinstall lifecycle script in package.json that runs automatically on `npm install`. The script uses curl to fetch an internal Baidu host (http://bsrc-ssrf.n.baidu-int.com/...), writes the response to /tmp/bsrc.txt, and POSTs the contents to an attacker-controlled interactsh collector at pdxkwzizhzzdpzpgcieqk6d1v7ynqsgfo.oast.fun/bsrc. The package's advertised purpose is a trivial date-formatting wrapper (index.js exports a single formatDate function); the SSRF probe and outbound exfiltration are unrelated to that purpose. The name shape (`simple-date-formatter-new-12`), empty author metadata, and OAST beacon are consistent with a dependency-confusion / typosquat probe designed to detect installation inside a target organization and leak internal network responses reachable from the installer's network position to a third-party collector.

Source published

28 Sep 2026 18:08:15 UTC

Source modified

28 Sep 2026 18:30:06 UTC

Observed 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

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · OSV · upstream source license applies. Source text is retained; field grouping and change labels are provided by ChangeIntel.