🛡️ MAL-2026-12196 — simple-date-formatter-new-4

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Malicious code in simple-date-formatter-new-4 (npm)

Source: amazon-inspector

Package advertises itself as a date-formatting utility but its actual behavior on install is credential theft and internal-network reconnaissance. The postinstall script in package.json runs a shell one-liner that probes internal Kubernetes API endpoints, dumps /etc/resolv.conf and ip route, TCP-scans internal hosts, reads the pod's Kubernetes service-account token from /var/run/secrets/kubernetes.io/serviceaccount/token, and POSTs the aggregated output via curl to a hardcoded OAST (interact.sh) collector at http://safjhdvsfwzhieemkdzbgr54r0yjhrmok.oast.fun/escinfo8. A bundled postinstall.js additionally enumerates ~/.ssh (listing public keys), collects the local username and platform, and POSTs the JSON to a hardcoded IP 124.221.154.135 over HTTPS; in-file comments describe it as an SSH-key theft C2 demo. The library payload (index.js) is a three-line wrapper around toLocaleDateString, functioning solely as cover for the install-time attack.

Affected software

MAL-2026-12196 is recorded against 1 package.

  • simple-date-formatter-new-4

Timeline and source

Published on 5 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.npmjs.com (Package)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-08-05
Updated 2026-08-12
Modified 2026-08-05
Fix URL N/A

Affected Packages

Software From version Fixed in
simple-date-formatter-new-4 — —

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