🛡️ MAL-2026-12202 — simple-date-formatter-util-13

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

Description

Malicious code in simple-date-formatter-util-13 (npm)

Source: amazon-inspector

Package presents itself as a date-formatting utility (index.js is a four-line toLocaleDateString wrapper) but its package.json postinstall hook runs an inline shell pipeline that reads /proc/self/status, /dev, /home/work, /wenchain, and /etc/hosts, probes internal Kubernetes API endpoints, and POSTs the collected output to an attacker-controlled Interactsh OAST endpoint at safjhdvsfwzhieemkdzbgr54r0yjhrmok.oast.fun/escinfo2. The tarball also ships postinstall.js, which enumerates the installer's ~/.ssh directory, gathers filenames plus username and platform, and POSTs the JSON payload over HTTPS to the hardcoded IP 124.221.154.135. Both behaviors auto-execute on npm install.

Affected software

MAL-2026-12202 is recorded against 1 package.

  • simple-date-formatter-util-13

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-13 — —

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