simple-date-formatter-new-5
This report shows the evidence for simple-date-formatter-new-5@1.0.0, the only known version.
OpenSSF/OSV Malicious Advisory
imported 3mo ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-11543 confirms this npm version as malicious.
Advisory
MAL-2026-11543
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in simple-date-formatter-new-5 (npm)
Details
Package advertised as a date-formatting utility performs supply-chain attack behavior. package.json declares a postinstall shell one-liner that, on npm install, collects kernel version, IP addresses, Kubernetes API probes, cloud instance metadata (AWS 169.254.169.254 and Alibaba 100.100.100.200), an internal /24 TCP scan, ARP/DNS data, and a listing of /var/run/secrets/kubernetes.io/serviceaccount/, then POSTs the aggregated output via curl to http://safjhdvsfwzhieemkdzbgr54r0yjhrmok.oast.fun/escinfo9. The main module (index.js) additionally enumerates ~/.ssh for key files on require() and issues an HTTPS POST containing the directory listing plus username and platform to hardcoded IP 124.221.154.135:443/post. The advertised formatDate export is a trivial cover for the exfiltration code paths.
References
Source & flagged code
0 flagged · loading sourceNo flagged code excerpts are attached to this scan.
Findings
1 High
HighOsv Malicious Advisory
Affected versions and remediation
This report applies to simple-date-formatter-new-5@1.0.0.
The versions list below shows the verdict for each recorded version.
- Avoid installing simple-date-formatter-new-5@1.0.0. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
Source advisory published: .
This report uses published external intelligence. The advisory does not provide a separate source-code analysis for each listed version.
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