Malicious Package Affecting typo-crypto package, versions *


Severity

Recommended
0.0
critical
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Attacked

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-JS-TYPOCRYPTO-18467865
  • published30 Jul 2026
  • disclosed27 Jul 2026
  • creditCJ Moses

Introduced: 27 Jul 2026

New Malicious CVE NOT AVAILABLE CWE-506  (opens in a new tab)

How to fix?

Avoid using all malicious instances of the typo-crypto package.

Overview

typo-crypto is a malicious package. This package contains a trojanized core.js file mimicking the legitimate core-js package. The malware activates when it receives a hash input beginning with 0098273, then downloads a second-stage payload from a hardcoded C2 server and runs Windows, macOS, or Linux specific behavior, concealing itself with base64 plus an XOR cipher keyed to 01042025 and maintaining file-based persistence with payload rotation.

Note: This package's malicious behavior may be linked to that of the compromised versions of chalk, debug, and axios.

CVSS Base Scores

version 4.0
version 3.1