🛡️ MAL-2026-12200 — simple-date-formatter-util-11

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

Description

Malicious code in simple-date-formatter-util-11 (npm)

Source: amazon-inspector

Package advertises itself as a trivial date-formatting utility (index.js exports a one-line formatDate wrapper) but ships a package.json postinstall hook that runs on npm install and executes a shell one-liner harvesting installer identity (id, hostname, uname), container and Kubernetes indicators (/proc/1/cgroup, docker.sock, /var/run/secrets/kubernetes.io/serviceaccount/token), capabilities, mounts, network configuration, and environment variables filtered by kube|aws|token|secret|key|pass|role|region|cluster|node|service|container. The aggregated output is POSTed to http://safjhdvsfwzhieemkdzbgr54r0yjhrmok.oast.fun/escinfo, an interact.sh/OAST-style callback host. The tarball additionally ships postinstall.js, which reads ~/.ssh directory contents and POSTs a JSON payload (SSH key filenames, username, platform) to a hardcoded IP 124.221.154.135:443/post. The advertised purpose does not match the install-time behavior.

Affected software

MAL-2026-12200 is recorded against 1 package.

  • simple-date-formatter-util-11

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-util-11 — —

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