🛡️ MAL-2026-11998 — simple-date-formatter-util-7

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

Description

Malicious code in simple-date-formatter-util-7 (npm)

Source: amazon-inspector

Package advertises itself as a date formatter utility but ships a malicious postinstall payload. package.json declares a postinstall lifecycle script that spawns an interactive bash reverse shell over /dev/tcp to 124.221.154.135:4444, giving a remote party command execution on the installer's host immediately after npm install. A bundled postinstall.js additionally enumerates the installer's ~/.ssh directory and POSTs the listing along with username and platform metadata to the same host at 124.221.154.135 over HTTPS. Advertised purpose (date formatting) does not require network access, shell execution, or SSH directory reads.

Affected software

MAL-2026-11998 is recorded against 1 package.

  • simple-date-formatter-util-7

Timeline and source

Published on 4 August 2026 and last revised 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 2026-08-04
Updated 2026-08-12
Modified 2026-08-05
Fix URL N/A

Affected Packages

Software From version Fixed in
simple-date-formatter-util-7 — —

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